Patent ID: 9623533
Date: 2017-04-18
CPC Classifications: B24B

Claim:
1. A method for sharpening a tool having a blade portion with opposing side surfaces and a cutting edge therebetween, the method comprising: placing a selected side surface of the tool in contacting engagement against an upper reverse sharpening guide surface to orient the tool at an acute angle with respect to an abrasive surface, wherein the abrasive surface extends in a lateral direction from a first end to a second end along a first plane, the upper reverse sharpening guide surface located proximate the first end and aligned along a second plane that intersects the first plane at the acute angle, the cutting edge contactingly engaging a non-abrasive support surface disposed between the upper reverse sharpening guide surface and the first end of the abrasive surface to establish a plunge depth of the tool prior to contact with the abrasive surface, the non-abrasive support surface arranged so that a third plane orthogonal to the first plane intersects the first plane, the non-abrasive support surface and the guide surface; and moving the tool away from the upper reverse sharpening guide in said lateral direction toward the second end while nominally maintaining the tool at the acute angle so that the cutting edge of the tool disengages the non-abrasive support surface and moves along the abrasive surface from the first end toward the second end for sharpening thereagainst in a trailing cutting edge orientation.