Patent Publication Number: US-2020282470-A1

Title: Pocket Hole Jig Swing Stop Measuring System

Description:
CROSS-REFERENCE TO RELATED APPLICATIONS 
     This application claims priority under 35 U.S.C. § 119 to U.S. Provisional Application No. 62/814,517 filed on Mar. 6, 2019, the entire contents of which are incorporated herein by reference. 
    
    
     STATEMENT CONCERNING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT 
     Not applicable. 
     FIELD OF THE INVENTION 
     This invention relates to jigs and fixtures for aligning, guiding, and/or holding a workpiece on woodworking machinery during a woodworking operation. 
     BACKGROUND OF THE INVENTION 
     Woodworking machines utilize various means of positioning or securing a workpiece as it is cut, drilled, routed, or otherwise worked. As standard equipment, a pocket hole jig is not fitted with a stop system for measuring the workpiece location or for securing the workpiece in the desired location. A position stop helps establish a repeatable location of the workpiece boards in relationship to, for instance, a drill bit or a cutter. A flip stop or a swing stop, which is rotated out of the way when not in use, also helps to establish a consistent workpiece location. One benefit of this technique is that the edge of the board being drilled is accurately positioned. The accuracy of processing multiple pieces can be improved with use of a stop system. 
     One example support stop is described in U.S. Pat. No. 8,231,313 B2. The support stop is a two-piece device having a main body and a pivot arm. The pivot arm can be moved between a support position (shown in  FIG. 14A ) and a stop position (shown in  FIG. 14B ). The support stop, however, is configured such that it cannot be simultaneously used as a support and as a stop. Multiple support stops must be used and spaced apart to provide the discrete support and stop functionalities. For instance, a first support stop must be positioned closer to the jig to support the workpiece on the main body of the first support stop with the pivot arm in the support position, and a second support stop must be positioned beyond the first support to function as a stop to position the workpiece with use of the pivot arm in the stop position. And, when the support stop is in the stop position, it no longer acts to provide support for a workpiece. 
     SUMMARY OF THE INVENTION 
     Jigs and fixtures for aligning and positioning a workpiece on woodworking machinery during a woodworking operation are described as well as methods for modifying and using jigs, fixtures, and position stops. In one embodiment, a T-slot mounted stop base has a groove in the middle to capture and support a swing stop assembly that moves out of the way when contacted with a workpiece. In another embodiment, a swing stop assembly is configured to function as both a support platform and a swing stop measuring device. In other embodiments, swing stop assemblies capable of use with pocket hole jigs and other woodworking tools are described. In further embodiments, swing stop position adaptors and measurement devices are disclosed. In further embodiments, the swing stop assemblies of this disclosure are designed to interface with the standard jigs and equipment without the need, for instance, to drill or fabricate. 
     The foregoing and other objects and advantages of the invention will appear in the detailed description that follows. In the description, reference is made to the accompanying drawings that illustrate the preferred embodiments of the invention. 
    
    
     
       BRIEF DESCRIPTION OF THE DRAWINGS 
         FIG. 1A  is a perspective view of a KREG K4 pocket hole jig  10  secured to a flat board  30  and an example swing stop assembly  22 . 
         FIG. 1B  is an enlarged perspective view of the swing stop assembly  22  shown in  FIG. 1A  positioned on an example track extrusion  20 . 
         FIG. 1C  is a perspective view of the swing stop assembly  22  shown in  FIG. 1B . 
         FIG. 1D  is an exploded view of an example swing arm  28  and an example rotation pin  50  lined up with a hole  33  in the swing arm  28 . 
         FIG. 1E  is an end view of an example T-slot extrusion  20  to which the swing stop assembly  22  may be attached. 
         FIG. 1F  is an end view of an optional example T-slot track  21 . 
         FIG. 2A  is a perspective view of a KREG K4 pocket hole jig secured to a flat board and a pair of example swing stop assemblies  22 . 
         FIG. 2B  is an enlarged perspective view of the swing stop  22  shown in  FIG. 2A  positioned on the track extrusion  20  in a stand-by or support position. 
         FIG. 2C  is an enlarged perspective view of the swing stop  22  in the shown in  FIG. 2A  positioned on the track extrusion  20  in an engaged or stop position. 
         FIG. 2D  is an end view of the swing stop arm  28  rotated to the stand-by or support position. 
         FIG. 2E  is an end view the swing stop arm  28  rotated to the engaged or stop position. 
         FIG. 2F  is an end view of the table mounted extrusion  20 . 
         FIG. 2G  is an end view of an example Z-shaped extrusion  32 . 
         FIG. 2H  is an end view of the table-mounted extrusion  20  screwed to a support board  30 , the Z-shaped extrusion  32 , and of the swing stop positions shown with dotted lines. 
         FIG. 2I  is an end view of the swing stop arm  28  shown in the positions illustrated in  FIG. 2H . 
         FIG. 3A  is a perspective view of a KREG K4 pocket hole jig  10  and a pair of example swing stop assemblies  22 . 
         FIG. 3B  is an enlarged perspective view of the swing stop assembly  22  shown in  FIG. 3A  removed from the track extrusion  20  and the swing stop arm  28  in the stand-by or support position. 
         FIG. 3C  is a side view of the swing stop arm  28  in the stand-by or support position. 
         FIG. 3D  is an enlarged perspective view of the swing stop assembly  22  shown in  FIG. 3A  removed from the track extrusion  20  and the swing stop arm  28  in the engaged or stop position. 
         FIG. 3E  is a side view of the swing stop arm  28  in the engaged or stop position. 
         FIG. 4A  is a perspective view of a KREG K4 pocket hole jig  10  and a pair of example swing stop assemblies  22 . 
         FIG. 4B  is an enlarged perspective view of the swing stop assembly  22  shown in  FIG. 4A  positioned on the track extrusion  20 . 
         FIG. 4C  is an enlarged perspective view of  FIG. 4A  of the U-shaped clamp on fixture  52 . 
         FIG. 4D  is a perspective view of a KREG K4 pocket hole  10  with a workpiece panel  26  positioned for drilling. 
         FIG. 4E  is a perspective view from under the workpiece  26  engaged by two swing stop assemblies  22  that are secured to a T-slot track  20 . 
         FIG. 5A  is an exploded perspective view of the example U-shaped clamping fixture  52 , the example vertical T-slot leg  54 , the example L-shaped connector  60 , the example T-slot extrusion track  20 , and example swing stop assemblies  22 . 
         FIG. 5B  is an enlarged perspective view of a portion of the U-shaped fixture  52 . 
         FIG. 5C  is an exploded perspective view of the T-slot extrusion track  20 , example tape measure  24 , example swing stop Z-shaped extrusion  32 , and the rectangular swing stop arm  28 . 
         FIG. 5D  is a perspective view of the L-shaped connector  60  that fits into the vertical T-slot leg  54  and the horizontal track  20 . 
         FIG. 5E  is an exploded perspective view of an example connector plate  64 . 
         FIG. 6A  is an exploded view of the U-shaped clamping fixture  52 , the vertical T-slot leg  54 , the L-shaped connector  60 , the T-slot extrusion track  20 , and the swing stop assemblies  22 . 
         FIG. 6B  is an enlarged perspective view of the rectangular U-shaped extrusion  52 . 
         FIG. 6C  is an enlarged perspective view of the T-slot track  54 . 
         FIG. 6D  is an exploded perspective view of the swing stop assembly  22 . 
         FIG. 7A  is a perspective view of a T-slot track  20  and an example slide stop assembly  69 . 
         FIG. 7B  is an enlarged perspective view of the slide stop assembly  69  of  FIG. 7A . 
         FIG. 7C  is a perspective view of the slide stop assembly  69  of  FIG. 7A  removed from the T-slot track  20 . 
         FIG. 7D  is an exploded perspective view of the T-slot track  20 , the L-shaped stop base  72 , the oblong stop arm  73 , and the pin  50  that fits into the stop arm base  72  and into the oblong slot  77  in the stop arm  73 . 
         FIG. 7E  is a side view illustration of three positions of the stop arm  73  represented with dotted lines. 
         FIG. 7F  is an end view illustration of the workpiece  26  starting to make contact with the stop arm  73  when it is in the engaged position extending past the side edge of the T-slot extrusion  20 . 
         FIG. 7G  is an end view illustration of the workpiece  26  moving the stop arm  73  backwards with the opposite end of the stop arm  73  elevating above the track. 
         FIG. 7H  is an end view illustration of the workpiece  26  moving the stop arm  73  backwards with the opposite end of the stop arm  73  elevating above the track  20  at a near vertical position. 
         FIG. 8A  is a perspective view of a KREG K4 pocket hole jig  10  secured to a flat board  30  and a pair of example swing stop assemblies  76  incorporating a ruler point base  80 . 
         FIG. 8B  is an enlarged perspective view of the swing stop assemblies  76  shown in  FIG. 8A . 
         FIG. 8C  is a perspective view of the swing stop assemblies  76 . 
         FIG. 8D  is an enlarged perspective view of  FIG. 8C  illustrating the Z-shaped swing stop base  78  in contact with the cursor plate  80 . 
         FIG. 8E  is a perspective view of the cursor plate  80  of  FIG. 8D  removed from the Z-shaped swing stop base  78 . 
         FIG. 8F  is an end view of a portion of the swing stop assembly  76  positioned on the rectangular T-slot extrusion  20 . 
         FIG. 9A  is an exploded perspective view of the T-slot track extrusion  20 , the ruler  24 , the Z-shaped swing stop base extrusion  78 , the cursor plate  80 , the swing stop arm  28 , and the tightening screw  38 . 
         FIG. 9B  is a perspective view of the Z-shaped swing stop base extrusion  78 . 
         FIG. 9C  is a perspective view of the cursor plate  80 . 
         FIG. 9D  is a perspective view of the swing stop arm  28 . 
         FIG. 9E  is a side view of the cursor plate  80 . 
         FIG. 9F  is a side view of the Z-shaped swing stop base extrusion  78 . 
         FIG. 9G  is an exploded perspective view of the rectangular T-slot extrusion  20  with an indentation  96  on both sides for accepting a tape measure  24 . 
         FIG. 10A  is a perspective view of a KREG K5 pocket hole jig  88  and a pair of example swing stop assemblies  90 . 
         FIG. 10B  is an enlarged perspective view of the swing stop assembly  90  shown in  FIG. 10A . 
         FIG. 10C  is a perspective view of the swing stop assembly  90  shown in  FIG. 10A  removed from the T-slot track. 
         FIG. 10D  is a perspective view of the cursor plate  80  removed from the Z-shaped swing stop base member  92 . 
         FIG. 10E  is an end view of the T-slot extrusion  20  with the Z-shaped swing stop base extrusion  92 , the cursor plate  80 , and the swing stop arm  93 . 
         FIG. 10F  is an enlarged side view showing the V-grooves  84  of the Z-shaped swing stop base extrusion  92 . 
         FIG. 11A  is a perspective view of a KREG K5 pocket hole jig  88  with a clamp-on swing stop positioning system including two swing stop assemblies  90  that support the workpiece panel  26  at the same height as the jig floor  89  and provides an adjustable swing stop for repeatedly locating the end of the workpiece  26  in relationship to the drill guide hole. 
         FIG. 11B  is an enlarged perspective view of  FIG. 11A  illustrating a spacer  65  that is located between the U-shaped fixture  52  and the vertical T-slot track  54  that extends to the bottom of the pocket hole jig. 
         FIG. 11C  is an exploded perspective view of the U-shaped clamping fixture  52 , the spacer  65 , the vertical T-slot leg  54 , the L-shaped connector  60 , the T-slot extrusion track  20 , and the swing stop assemblies  90 . 
     
    
    
     DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT 
     Embodiments of the invention are illustrated in extensive detail in the accompanying  FIGS. 1-11 , and as set forth above in the description of the accompanying  FIGS. 1-11 . As shown in the  FIGS. 1-11 , jigs, fixtures, and position stops for locating, aligning, guiding, and/or holding a workpiece on woodworking machinery during a woodworking operation are described, as well as methods of making, modifying, and using jigs and fixtures. In some embodiments, the example swing stop assemblies described herein provide a swing stop assembly that can simultaneously function as both a support for a workpiece and as a stop to accurately position the workpiece. The example swing stop assemblies include a swing stop arm that is configured to hang in a natural orientation that defines an engaged or stop position, whereat the swing stop assembly can both support the workpiece and simultaneously function as a stop for the workpiece. And, the swing stop arm is configured to be moveable by urging the swing stop arm away from the natural position (about the swing stop arm pivot axis), such as via engagement with a workpiece, to a non-engaged, stand-by or support position, such that the swing stop assembly readily provides a support surface for the workpiece that is generally coplanar with the woodwork device with which it is used (e.g., the floor of a jig). Furthermore, the example swing stop assemblies can be readily adapted to accommodate jigs of varying form factors and accessories, such as measurement devices. 
       FIG. 1A  illustrates an example embodiment of a swing stop assembly  22  in accordance with an aspect of the invention. The illustration is a perspective view of a KREG K4 portable pocket hole jig  10  with the workpiece  26  secured in place with the jig clamp  16 . The KREG K4 jig  10  is secured to a flat board that functions as an auxiliary table  30 . The workpiece  26  is supported by the floor  63  of the KREG K4 portable pocket hole jig  10  and the other end of the workpiece  26  is supported by two swing stop assemblies  22 . The top horizontal surface  15  of the swing stop assembly  22  is configured to be nominally level with the floor  63  of the KREG K4 pocket hole jig  10 , thus establishing a generally level and coplanar support arrangement for the workpiece  26 . 
       FIG. 1B  is an enlargement of  FIG. 1A  illustrating the swing stop assembly  22  positioned on the T-track extrusion  20 . A Z-shaped base extrusion  32  is the base of the swing stop assembly  22 . The bottom horizontal surface  17  of the Z-shaped extrusion  32  contacts the T-slot track  20 . A flange  36  on the bottom of the lower horizontal surface  17  of the Z-shaped base extrusion  32  fits into the T-slot track  20  opening  55 . The Z-shaped base extrusion  32  has a slot  13  cut, or otherwise formed, in the middle of it. A rectangular swing stop arm  28  is located in the slot  13 . The rectangular swing stop arm  28  hangs down from the middle of the Z-shaped extrusion  32  into a natural position (e.g., as urged by gravity when the swing stop assembly  22  is generally oriented as shown) and lines up with the ruler  24  on the edge of the T-slot track  20 . Given that the bottom of the swing stop arm  28  is positioned proximate the ruler  24  located on the edge of the extrusion  20 , the position of the swing stop arm  28 , and hence an edge of the workpiece board  35 , can be readily determined off the end of the Z-shaped extrusion  32 . The swing stop assembly  22  supports the workpiece  26 . The top of the swing stop  28  is in the engaged or stop position  42  and contacts the edge of the workpiece board  35  locating the workpiece  26  in relationship to the drill guide  12  for accurate and repeatable positioning of the pocket holes. 
       FIG. 1C  is an enlarged illustration of the swing stop assembly  22  shown in  FIG. 1B  with the Z-shaped base extrusion  32  shown removed from the T-slot extrusion  20 . The swing stop arm  28  is located in a slot  13  in the middle of the Z-shaped base extrusion  32 . The middle portion  19  of the Z-shaped base extrusion  32  extends vertically connecting the bottom horizontal surface  17  with the top horizontal surface  15 , which supports the workpiece  26 . The middle portion  19  of the Z-shaped base extrusion  32  extends vertically past the upper horizontal leg  15  to create a fence  25 . A round ridge  41  in the middle portion of the Z-shaped extrusion  19  contains a small slot or hole  34  in a middle leg that houses a round pin  50  that secures the rotatable swing stop arm  28  in place.  FIG. 1D  is an exploded view of the swing stop arm  28  and the rotation pin  50  lined up with the hole  33  in the swing stop arm  28 . The pin  50  extends into the hole  34  defined by the round ridge  41  and through the hole  33  in the swing stop arm  28 , thus pivotally coupling the swing stop arm  28  to the Z-shaped extrusion  32  about the aligned axes of the holes  33 ,  34 .  FIG. 1E  is an end view of the T-slot extrusion  20  that the swing stop assembly  22  engaged. And,  FIG. 1F  is an end view of an optional T-slot track  21  with a flat extension and a V-shaped indentation  84 , that can aid in installation by providing an area that, for instance, can be easily drilled to establish a hole for mounting the track  21  to an auxiliary table  30 . 
     In the example arrangement shown, for instance, in  FIGS. 1A, 1B, and 1C , the T-slot track  20  can be ¾ inch by ⅜ inch and attached (e.g., screwed) to the flat board  30 . And, while the swing stop arm  28  is illustrated as generally rectangular in form, the swing stop arm may comprise a variety of form factors, such as include rounded ends or arcuate ends and surfaces. In use, one of the outside legs of the Z-shaped base extrusion  32  is horizontal and parallel to the floor  63  of the pocket hole jig  10 , and can be positioned to support a workpiece board  35 . The middle leg  19  of the Z-shaped base extrusion  32  extends past the horizontal surface  15  supporting the workpiece  26  and functions as a fence  25  to position and align the workpiece  26  with the drill guide block. In one embodiment, approximately the top quarter of the swing stop arm  28  extends upward through the slot  13  in the Z-shaped base extrusion  32 . The swing stop arm  28  functions as a position stop when the end of the board rests against it. The swing stop arm  28  can also be rotated to a disengaged, stand-by or supporting position when the edge of the board is used to urge the swing stop arm  28  to rotate away from the natural stop position. 
     As shown in one embodiment, the swing stop assembly  22  includes a Z-shaped base extrusion  32  having a horizontal support surface  15 , which generally defines a support surface area bounded by the outer perimeter of the support surface  15  (and extending, in one embodiment to bridge the slot  13 ). The Z-shaped base extrusion  32  and support surface  15  further define a width of about 1.125 inches in a first direction (e.g., in the axial direction defined by the pivotal movement of the swing stop arm  28 ). The swing stop arm  28  that is pivotally coupled to the Z-shaped base extrusion  32  defines an arm width in the first diction of about 0.125 inches, which is less than the base width. In other forms, the ratio of widths can be preferably defined such that the width of the swing stop arm  28  is less than the width of the support surface  15 , therefore accommodating a dual functionality of supporting and stopping when the swing stop arm  28  is in the stop position. 
       FIG. 2A  is a perspective drawing of a KREG K4 pocket hole jig  10  secured to a flat board  30 . The view is shown from the side of the jig  10  opposite the fast action toggle clamp handle  16 . Two spacers  48  fill the drill guide compartment  31  in the drill guide tower  71 . Secured to the T-slot track extrusion  20  are two example swing stop assemblies  22 .  FIG. 2B  is an enlargement of the swing stop assembly  22  shown in  FIG. 2A  illustrating the swing stop assembly  22  that is secured to the T-slot track extrusion  20  with a machine screw  38 . The swing stop assembly  22  nearest to the jig  10  supports the middle of the workpiece  26 . The swing arm  28  is pushed or urged forward by the workpiece  26  and is in the stand-by position or support position  44 .  FIG. 2C  is an enlargement of the swing stop assembly  22  positioned furthest from the jig  10  shown in  FIG. 2A  positioned on the T-slot track extrusion  20 . The swing stop arm  28  is positioned in the natural, engaged or stop position  42  such that the swing stop arm  28  is hung or oriented to be in contact with the end of the workpiece board  35 . That is, at least a portion of the swing stop arm  28  extends through an area of the support surface  15  (e.g., extends through an imaginary plane defined by the bounds of outer perimeter of the support surface  15  on both sides of the slot  13 ) upon which the workpiece  26  can engage when the swing stop arm  28  is urged to the support or standby position. When the swing stop assembly  22  is in the natural stop position, such that it is rotated into the opening slot  13  in the middle of the fence  25 , the swing stop arm  28  is positioned near the ruler  24  located on the edge of the extrusion  20  and the workpiece  26  is in contact with the fence  25 . The swing stop arm  28  is then positioned in the engaged or stop position in contact with the end  35  of the workpiece  26 . 
       FIG. 2D  illustrates the swing stop arm  28  rotated to the stand-by or support position  44 . The hole  33  in the example swing stop arm  28  is located above or vertically offset from the transverse centerline so that the body of the swing stop arm  28  naturally hangs down vertically (e.g., generally upright as illustrated) by force of gravity.  FIG. 2E  illustrates the swing stop arm  28  rotated to the engaged position  42 .  FIG. 2F  is an end view of the 0.375″ by 0.750″ T-slot extrusion  20  with and indentation  96  for engagement with a ruler  24 .  FIG. 2G  is an end view of the Z-shaped extrusion  32 . 
       FIG. 2H  is an end view of the example table-mounted extrusion  20  screwed to a support board  30  with a flat head screw  40 . To prevent the example swing stop assembly  22  from rotating, a flange  36  on the bottom leg  17  of the Z-shaped extrusion  32  fits into the T-slot opening  55  in the T-track  20 . The flip stop arm  28  is illustrated with dotted lines to depict the relative positioning of an example support or stand-by position and an example stop or engaged position. The engage position  42  is illustrated with thinner dotted lines. The stand-by position  44  is illustrated with thicker dotted lines. The swing stop arm  28  is held in place by a long pin  50  (see  FIG. 1D ) that fits into a long hole  34  located in a circular ridge  41  of the middle member  19  of the Z-shaped stop base extrusion  32 .  FIG. 2I  is an isolated view of the swing arm positions illustrated in  FIG. 2H , again with the engage swing stop arm position  42  illustrated will a thinner dotted line and the swing stop arm stand-by position  44  illustrated with a thicker dotted line. 
     In the example arrangement shown, for instance, in  FIGS. 2A, 2B, 2C, and 2H , the T-slot track  20  can be a ¾ inch by ⅜ inch extrusion attached to the flat board  30 . Attached to the T-slot track extrusion  20  is a short Z-shaped base extrusion  32  with a small hole  34  in the middle leg  19 . A slot  13  in the middle  19  of the Z-shaped base extrusion  32  accepts a rectangular swing stop arm  28 . A pin  50  located in the small hole  34  of the Z-shaped base extrusion  32  extends through a hole  33  in the rectangular swing stop arm  28 . One of the outside legs  15  of the Z-shaped base extrusion  32  is horizontal and parallel to the floor  63  of the pocket hole jig  10  and is positioned to support a workpiece board  26 . The middle leg  19  of the Z-shaped base extrusion  32  extends past the horizontal surface  15  supporting the workpiece  26  and functions as a fence  25  to position and align the workpiece  26  with the drill guide block. In one embodiment, approximately the top quarter of the swing stop arm  28  extends upward through the slot  13  in the middle of the Z-shaped base extrusion  32 . The rectangular swing stop arm  28  functions as a position stop when the end of the board rests against it, and the swing stop arm  28  is rotatable to a support position when the edge of the board is pushed against it. 
       FIG. 3A  is a perspective drawing of a KREG K4 pocket hole  10  with a workpiece panel  26  positioned for drilling. The view is shown from the clamp  16  side of the jig  10 . The workpiece  26 , which is illustrated with dotted lines, is supported by two example swing stop assemblies  22  shown secured to a T-slot track  20  and the floor  63  of the jig  10 . The swing stop arm  28  nearest the KREG K4 pocket hole  10  is illustrated as having been urged or moved out of the way by the workpiece  26  and is in the stand-by or support position  44 . The swing stop arm  28  that is the farthest from the KREG K4 pocket hole jig  10  is in the engaged or stop position  42 , and is in contact with the end  35  of the workpiece  26 . As illustrated, each of the swing stop assemblies  22  is capable of functioning as a full support (e.g., when the swing stop arm  28  is urged out of engagement) and as a stop (e.g., when the swing stop arm  28  is in its natural hanging orientation). In addition, the swing stop assemblies  22  also include a support surface that can be utilized simultaneously when the swing stop arm  28  is in the stop position. Furthermore, the swing stop assemblies  22  provide a generally planar extension of the floor  63  of the jig  10 , such that a longer workpiece can be supported beyond the floor  63  of the jig  10  at desired locations and/or intervals. 
     Additional aspects of the example swing stop assembly  22  are illustrated in  FIGS. 3B, 3C, 3D, and 3E .  FIG. 3B  is an enlargement of the  FIG. 3A . The workpiece  26  is represented with a dotted line.  FIG. 3B  illustrates the swing stop assembly  22  nearest the jig  10  with the swing stop arm  28  moved out of the way by the workpiece  26  and located in the stand-by or support position  44 . Specifically, the workpiece  26  is in contact with the fence  25  and the swing stop arm  28  is rotated into the opening or slot  13  in the middle  19  of the fence  25 .  FIG. 3C  illustrates the swing stop arm  28  oriented in the stand-by position  44  at which the longitudinal axis of the swing stop arm  28  is further skewed relative to a vertical reference.  FIG. 3D  illustrates the swing stop assembly  22  shown in  FIG. 3A  furthest from the jig  10 , with the workpiece  26  represented with a dotted line. The end  35  of the workpiece  26  is shown in contact with the swing stop arm  28 , which is in the natural, engaged or stop position  42 .  FIG. 3E  illustrates the swing stop  28  in the engaged position  44  at which the longitudinal axis of the swing stop arm  28  is closer to the vertical reference than when in the support or stand-by position shown in  FIG. 3B . 
       FIG. 4A  is a perspective drawing of a KREG K4 pocket hole jog  10  with a workpiece panel  26  positioned for drilling a pocket hole. The workpiece  26  is supported by the floor  63  of the jig  10  and two example swing stop assemblies  22 . The view is shown from the tower  71  side of the jig  10  opposite the fast action toggle clamp  16 . The clamp pad  95  allows the KREG K4 pocket hole jig  10  to be clamped to a workbench top. The drill guide  12  has been removed from the drill guide comportment  31  inside the pocket hole jig tower  31 . The dill guide compartment  31  contains two extruded spacers  48  that replace the drill guide  12 . A U-shaped fixture  52  is positioned on top of the jig tower  71  and is secured to the KREG jig drill guide opening spacers  48  with a thumbscrew  56 . Attached on one side of the U-shaped fixture  52  is vertically mounted, upright T-slot track  54 , which is secured with a machine screw  38 . Attached to the bottom of the T-slot vertical leg  54  is a ¾ inch by ⅜ inch T-slot extrusion  20 . Mounted on the T-slot track  20  are two swing stop assemblies  22  that support the workpiece  26 . The swing stop arm  28  of the swing stop assembly  22  shown in the foreground of the illustration is in the engaged stop position  42  and thus contacting the end  35  of the workpiece  26  represented with a dotted line.  FIG. 4B  is an enlargement of the swing stop assembly  22  shown in  FIG. 4A . The swing stop arm  28  is positioned in the engaged stop position  42  in contact with the edge  35  of the workpiece board  26 . The edge  35  of the workpiece board  35  is represented with a dotted line. 
       FIG. 4C  is an enlargement view of  FIG. 4A  of the U-shaped clamp on fixture  52 . Two spacers  48  are designed to replace the drill guide and fill the cavity of the drill guide compartment  31 . A U-shaped fixture  52  is positioned on top of the jig tower  71  and is secured to the two spacers  48  that fill the cavity of the drill guide compartment  31 . A T-slot extrusion  54  is secured to the end of the U-shaped clamp on fixture  52  with a machine screw  38 . The vertical T-slot extrusion  54  has a flip stop arm  58  attached to the T-slot opening  55  with a thumb screw  56 . Attached to the bottom of the vertical T-slot extrusion  54  is a ¾ inch by ⅜ inch T-slot extrusion  20 . 
       FIG. 4D  is a perspective drawing of a KREG K4 pocket hole  10  with a workpiece panel  26  positioned for drilling. The workpiece  26  is resting on the floor  63  of the pocket hole jig  10  and is supported by the two swing stop assemblies  22 , which are secured to a T-slot track  20 . 
       FIG. 4E  is a perspective drawing from under the workpiece  26  supported by two swing stop assemblies  22  secured to a T-slot track  20 . The bottom of the swing stop arms  28  line up with the ruler  24  located in the indentation  96  of the T-slot track  20 . The location of the swing stop arm  28  can be determined by the position of the swing stop assembly  22  (e.g., the location of the swing stop arm  28 ). The vertical member  19  of the Z-shaped extrusion  32  incorporates a round ridge  41  that contains a small central hole  34  for receiving the round pin  50  illustrated in  FIG. 1D . As discussed, a slot  13  in the middle  19  of the Z-shaped extrusion  32  is configured to accept the rectangular swing stop arm  28 . The pin  50  pivotally couples the swing stop arm  28  to the Z-shaped extrusion  32  when the pin  50  extends through the hole  34  in the ridge  41  and the hole  33  in the swing stop arm  28 . Again, one of the outside legs  15  of the Z-shaped extrusion  32  is configured to be substantially horizontal and parallel to the floor  63  of the pocket hole jig  10  such that it functionally establishes a planar extension of the floor  63  used to position and support a workpiece. In one embodiment, the middle leg  19  of the Z-shaped extrusion  32  extends past the horizontal surface  15  supporting the workpiece and functions as a fence  25  to position the workpiece  26  to be aligned with the drill guide block. In the example embodiment, the swing stop arm  28  is located in a centrally positioned slot  13  of the Z-shaped extrusion  32 . And, in one form, approximately the top quarter of the swing stop arm  28  extends upward through the slot  13  in the middle of the Z-shaped extrusion  32  thereby extending thorough an imaginary plane bounded by the perimeter of the horizontal surface  15  through which the slot  13  intersects. The rectangular swing stop arm  28  functions as a position stop when the end of the board rests against it (e.g., in a direction generally along the axis of rotation of the swing stop arm  28 ) and rotates from a resting position when the edge of the board is pushed against it (e.g., in a direction generally skewed to the axis of rotation of the swing stop  28 ). 
       FIG. 5A  is an exploded view of the example U-shaped clamping fixture  52 , the vertical T-slot legs  54 , the L-shaped connector  60 , the T-slot extrusion track  20 , the extrusion connector  64 , an exploded views of the example swing stop assemblies  22 . The view is shown from the closed side of the U-shaped extrusion  52 .  FIG. 5B  is an enlarged view of the end flange  43  of the U-shaped extrusion  52  illustrating the threaded hole  66  configured to receive the machine screw  38  to secure the vertical T-slot track  54  at a desired position.  FIG. 5C  is an exploded view of the T-slot extrusion track  20 , the ruler  24 , and the exploded swing stop assembly  22 . The swing stop assembly  22  includes the example Z-shaped base extrusion  32  and the example rectangular swing stop arm  28 , with the swing stop arm  28  being pivotally coupled to the Z-shaped base extrusion  32  via the pin  50 .  FIG. 5D  is an enlarged view of the L-shaped connector  60  that fits into the vertical T-slot leg  54  and the horizontal track  20 , thus selectively coupling the components. Drilled and tapped holes  66  in each leg allow the L-shaped connector to be selectively locked into or secured to the track (e.g., T-slot track  54  and T-slot extrusion track  20 ) with a setscrew  62  or a machine screw  38 .  FIG. 5E  is an enlarged view of the rectangular shaped extrusion connector plate  64  that fits into the T-slot track  20 . Multiple drilled and tapped holes  66  allow two T-slot extrusions  20  to be coupled together, thus further extending the available placement of the swing stop assemblies  22  and, as a result, the effective support and stop capabilities. 
       FIG. 6A , which is similar to  FIG. 5A  but from the opposite side of the U-shaped fixture  52 , is an exploded view of the U-shaped clamping fixture  52 , the vertical T-slot leg  54 , the L-shaped connector  60 , the T-slot extrusion track  20 , the extrusion connector  64 , and exploded views of the example swing stop assemblies  22 .  FIG. 6B  is an enlarged view of the rectangular U-shaped extrusion  52  illustrating two U-shaped grooves  68  on each side of a threaded hole  66 .  FIG. 6C  is an enlarged view of the end of the T-slot track  54  illustrating two U-shaped ridges  70  on the track  54  opposite the T-slot opening. The two U-shaped ridges  70  are configured to mate with the U-shaped grooves  68  illustrated in  FIG. 6B .  FIG. 6D  is an exploded view of the example swing stop assembly  22 , described throughout, that fits into the T-slot track  20  shown in  FIG. 6A . 
     An example embodiment of a slide stop assembly is illustrated in  FIGS. 7A-7H . Given the benefit of this disclosure, one skilled in the art will appreciate the various alterations and modifications to the slide stop assembly concept that fall within the scope of the invention. 
       FIG. 7A  is a perspective drawing of a T-slot track  20  with two example slide stop assemblies  69  secured to the T-slot track  20  via a stop base  71 . The stop base  71  is L-shaped with a rectangular elevation  36  that fits into the T-slot  20 . A workpiece  26  is in contact with the T-slot track extrusion  20 . The slide stop assembly  69  in the background of the drawing has a slide stop arm  73  moved to the stand-by or disengaged positon  44  by engagement with the workpiece  26 . The slide stop assembly  69  in the foreground of the drawing has a slide stop arm  73  shown in the engaged or stop position  42  with the end  35  of the workpiece  26 .  FIG. 7B  is an enlarged view of the slide stop assembly  69  shown in  FIG. 7A . The stop base  71  is L-shaped, with the short leg of the stop base  71  extrusion having an enlarged round shape  72  with a small slotted hole  34  inside the middle of the circular profile defined by the round shape  72 . A groove or slot  93  in the middle of the short leg of the stop base  71  is fitted with an oblong-shaped slide stop arm  73 . The oblong-shaped slide stop arm  73  has an oblong-shaped slot  77  generally centralized along a longitudinal axis of the slide stop arm  73 . The side of the slide stop arm  73  can be in contact with the end  35  of a workpiece  26 , such as the slide stop assembly  69  shown in the foreground of  FIG. 7A . 
       FIG. 7C  is a view of  FIG. 7B  with the slide stop assembly  69  removed from the T-slot track  20 .  FIG. 7D  is an exploded view of  FIG. 7A  illustrating the small round rod  50  that fits into the small hole  34  and through the oblong-shaped slot  77  of the slide stop arm  73 , thus pivotally and slideably coupling the slide stop arm  73  to the stop base  71 . As such, the slide stop arm  73  can both rotate about the axis of the pin  50  and slide along the pin  50  over the length of the slot  77 .  FIG. 7E  is an illustration of three example positions or orientations of the slide stop arm  73  as the slide stop arm  73  transitions between a support position and a stop position, represented with dotted lines. 
       FIGS. 7F-7H  further illustrate the example transition between a stop position (shown in  FIG. 7F ) and a stand-by position (shown in  FIG. 7H ). Beginning at  FIG. 7F , the slide stop arm  73  is in the full stop position with the pin  50  at the upper leftmost end of the slot  77 , such that the slide stop arm  73  is urged downward by gravity to the orientation shown resting on the T-slot track  20 . As the workpiece  26  is urged left toward and into the slide stop arm  73 , and toward the T-slot track  20 , the slide stop arm  73  is urged upward and leftward as the slot  77  and pin  50  interact at the interface there between. In  FIG. 7G , the slide stop arm  73  is oriented at about a 45 degree angle.  FIG. 7G  further illustrates the workpiece  26  moving the oval slide stop arm  73  onto the T-slot track extrusion  20 . As the workpiece  26  continues to urge the slide stop arm  73  to generally leftward, the slot  77  of the slide stop arm  73  continues to interact with the pin  50 , such that the slide stop arm  73  moves toward an generally vertically orientation as illustrated in  FIG. 7H  to rest atop the T-slot track  20 .  FIG. 7H  is an illustration of the workpiece  26  moved to abut the T-slot track extrusion  20 . As shown, the angled end portion of the slide stop arm  73  is resting near or on the T-slot track  20  and the opposite end of the slide stop arm  73  is raised, resulting in the slide stop arm  73  being in the stand-by position and not functioning as a stop. 
     The example embodiment of the slide stop assembly  69  can be adapted to accommodate various application requirements. For instance, the slot  93  can be located off center of the stop base  71 , and the slide stop arm  73  and slot  77  may be of varying lengths, dimensions, and relative positions. 
     Various alterations and modifications can be made to the example stop assemblies. For instance,  FIG. 8E  illustrates an example cursor plate  80  and  FIG. 10E  illustrates an example swing stop extrusion  92  that can be adapted for use with a variety of stop assemblies. 
       FIG. 8A  is a perspective drawing of a KREG K4 pocket hole jig  10  secured to a flat board  30 . The panel is between the drill guide block and the fast action clamp securing the workpiece panel. Attached to the flat board  30  is a ¾ inch by ⅜ inch horizontal T-slot extrusion  20  that has an indentation  96  for a ruler  24 . Attached to the extrusion  20  are two example swing stop assemblies  76 , which support the bottom of the workpiece  26 . The swing stop assemblies  76  are generally similar to the swing stop assemblies  22  described in detail above, with the addition of an example cursor plate  80 , for instance. The swing stop assembly  76  includes a short Z-shaped extrusion  78  with a small hole or slot  13  in the middle leg  19 . The slot  13  in the middle of the Z-shaped extrusion  78  is configured to accept a rectangular swing stop arm  28 . A pin  50  located in the small slotted hole  34  of the Z-shaped extrusion  82  extends through a hole  33  in the rectangular swing stop arm  28 , similar to that described above in connection with swing stop assembly  22 . 
       FIG. 8B  is an enlargement of the swing stop assembly  76  shown in  FIG. 8A . A cursor  82  on the cursor plate  80  lines up with the swing stop arm  28 , allowing the relative location of the swing stop arm  28  to be determined via the ruler  24 . In one example, aligned with the nominally 0.125 inch wide swing stop arm  28  is a rectangular, nominally 0.125 inch wide cursor  82  positioned in front of the ruler  24 . As before, one of the outside legs  15  of the Z-shaped extrusion  78  is configured to be horizontal and parallel to the floor of the pocket hole jig  10  and is further positioned to support a workpiece board  26 . The middle leg  19  of the Z-shaped base extrusion  78  extends upward past the horizontal surface  15  supporting the workpiece  26  and functions as a fence  25  (see  FIG. 9F ) to position the workpiece  26  to be aligned with the drill guide block. Again, as described in detail above, approximately the top quarter of the swing stop arm  28  may be configured to extend upward through the slot  13  in the middle of the Z-shaped base extrusion  78 . The swing stop arm  28  can again be urged from a natural, resting stop position to a support position at which the swing stop arm  28  is not encroaching on the imaginary plane bounded by the perimeter of the horizontal surface  15 . The rectangular swing stop arm  28  functions as a position stop when the end of the board rests against it. And, it can be rotated to a stand-by position when the edge of the board is moved against it pushing it out of the way. 
       FIG. 8C  is an enlargement of  FIG. 8B  with the example swing stop assembly  76  removed from the T-slot track  20 . This illustration shows the cursor plate  80  that is located between the Z-shaped swing arm base  78  and the machine screw  38 . In the middle of the rectangular cursor plate  80  is a narrow leg that functions as a cursor  82  in front of the ruler  24 . The cursor plate  80  is shown in detail in  FIG. 8E . In some embodiments, the cursor  82  and the swing stop arm  28  line up with each other and are both about 0.125 inches wide. Two V-shaped ridges  86  are located on the bottom of the cursor plate  80  and mate with the V-shaped grooves  84  on the top of the Z-shaped swing arm base  78 .  FIG. 8D  is an enlarged perspective view of  FIG. 8C  illustrating the Z-shaped swing arm base  78  in contact with the cursor plate  80 . The V-shaped ridges  86  and V-shaped grooves  84  help to position and restrain the cursor plate  80  and the swing arm base  78  when the machine screw  38  is installed. 
       FIG. 8F  is an end view of the example swing stop arm base  78  positioned on the rectangular T-slot extrusion  20 . In some forms, the distance between the bottom of the T-slot track  20  and the top of the swing stop assembly support floor (e.g., horizontal surface  15 ) is nominally 1-inch, which is the same as the height of floor  63  of the KREG K4 jig  10  (see, for instance,  FIG. 1A ). This configuration allows the example swing stop assembly  76  (and, for instance, the swing stop assembly  22 ) to be arranged to provide a generally planar and level imaginary floor with swing stop assemblies that are placed select and desired distances from a jig or other woodworking machine/fixture/device. 
       FIGS. 9A-9G  are various views of the example swing stop assembly  76 , which includes the Z-shaped base extrusion  78 , the cursor plate  80 , the swing stop arm  28 , the tightening screw  38 , and the retention rod or pin  50 , and the T-slot track extrusion  20  with the ruler  24 . In particular,  FIG. 9E  is an end view of the cursor plate  80  and  FIG. 9F  is an end view of the Z-shaped swing stop base extrusion  78 , which are configured to mate, as described above.  FIG. 9G  is an enlarged view of the example stick-on tape measure  24  and the T-slot track extrusion  20  with an indentation  96  on both sides for accepting a stick-on tape measure  24 . In other forms, the measurement indicators may be printed, engraved, or similarly associated with the structure of the T-slot track  20 . 
     Given the benefit of this disclosure, one skill in the art will appreciate the various alternatives and constructions of, for instance, the cursor plate  80 . For example, the cursor  82  can be tapered or rounded. In still other forms, the cursor plate  80  may include one or more cursors. In some embodiments, the cursor plate  80  and the Z-shaped base  78  may be integral (e.g., such as if injection molded as a single component). 
     The example embodiments described herein can be adapted to accommodate the form factor and dimensions of various woodworking devices. For instance, as described below, the dimensions of the example swing stop assembly  90  can be modified to accommodate the relative dimensions KREG K5 pocket hole jig  88  and the raised work surface floor  89  that it defines.  FIG. 10A  is a perspective drawing of a KREG K5 pocket hole jig  88 . A U-shaped fixture  52  is positioned on top of the jig  88  and is secured to the movable drill guide  12 . Attached to the U-shaped fixture  52  is a vertical T-slot leg  54  that extends vertically from the top of the U-shaped fixture  52  down to the bottom of the pocket hole jig body  88 . Attached to the bottom of the T-slot leg is a ¾ inch by ⅜ inch T-slot track extrusion  20 . Attached to the extrusion are two example swing stop assemblies  90 , which consist of a short Z-shaped base extrusion  92  with a small hole  34  in the middle vertical leg  101 . A slot  13  in the middle of the Z-shaped base extrusion  92  accepts a rectangular stop arm  93 . The workpiece panel  26  is illustrated with a solid line. 
     The example swing stop assemblies  90  are similar to the example swing stop assemblies  76  described above, with the middle vertical leg  101  being longer to accommodate the raised floor  89  of the jig  89 .  FIG. 10B  is an enlargement of the swing stop assembly  90  shown in  FIG. 10A . Aligned with the example 0.125 inch wide swing stop arm  93  is a rectangular approximately 0.125 wide cursor  82  positioned in front of the ruler  24 .  FIG. 10C  is an enlargement of the swing stop assembly  90  shown in  FIG. 10A  removed from the T-slot track  20 . The Z-shaped swing stop base  92  is longer to accommodate the higher floor of the KREG K5 pocket hole jig and, for instance, the ARMOR pocket hole jig.  FIG. 10D  is a stand-alone perspective drawing of the cursor plate  80  illustrated in  FIG. 10C . Again, and with reference to  FIG. 10E  and  FIG. 10F , two V-shaped ridges  86  are located on the bottom of the cursor plate  80 .  FIG. 10E  is an end view of the T-slot track extrusion  20  with the Z-shaped stop base extrusion  92  in contact with it. The cursor plate  80  is shown spaced apart from the Z-shaped swing stop base extrusion  92 .  FIG. 10F  is an enlarged side view showing the V-grooves  84  of the Z-shaped swing stop extrusion  92 . The distance between the bottom of the T-slot track extrusion and the floor (e.g., a horizontal surface  15 ) of the swing stop support platform is 1.5 inches, which is nominally the height of floor  89  defined by the KREG K5 jig  88  and the ARMOR pocket hole jig. 
       FIG. 11A  is a perspective drawing of a KREG K5 pocket hole jig  88  with a clamp on swing stop positioning system featuring two example swing stop assemblies  90 , which support the workpiece panel  26  at approximately the same height as the jig floor  89 , while also providing an adjustable swing stop for repeatedly locating the end of the workpiece in relationship to the drill guide  12 . The view is shown from the drill guide  12  side of the KREG K5 jig  88 . The swing stop assemblies  90  have been described above in detail. 
       FIG. 11B  is an enlargement of  FIG. 11A  illustrating a spacer  65  that is located between the U-shaped fixture  52  and the vertical T-slot track  54  that extends to the bottom of the pocket hole jig  88 . The solid rectangular spacer  65  is approximately the same dimension in thickness as the U-shaped fixture  52 . The spacer  65  expands the width of the U-shaped fixture  52  to accommodate the extra width of the KREG K5 jig  88  in comparison to the KREG K4 jig  10 . The U-shaped fixture  52  has two U-shaped grooves  68  to accurately position and secure accessories. The spacer  65  has two matching U-shaped elevations  70  on one side and two matching U-grooves  68  on the opposite side to accurately fit between the U-shaped fixture  52  and the modified T-track  54 .  FIG. 11C  is an exploded view of the U-shaped clamping fixture  52 , the spacer  65 , the vertical T-slot leg  54 , the L-shaped connector  60 , the T-slot extrusion track  20 , and exploded view of the example swing stop assemblies  90 . 
     Preferred embodiments of the invention have been described in considerable detail. Many modifications and variations to the preferred embodiment described will be apparent to a person of ordinary skill in the art. While various components have been described as distinct parts of an assembly, in alternative forms, select components can be formed as a single unit. In addition, while many of the components are described as metallic (e.g., aluminum) that are made via extrusion and secondary machining operations, the components may be comprised of other materials, such as plastics and composites, and/or manufactured to a final or near final form factor. Therefore, the invention should not be limited to the embodiment described.