Patent ID: 8166859

Claim:
An apparatus for trimming sheet material, comprising: a planar base; at least one a removable cutting track having an upper surface coplanar with a surface of the planar base and a defining a blade receiving channel having a selected pattern formed in the upper surface; a removable guide track positioned above the at least one cutting track, the guide track having a first channel in a top surface of the guide track substantially matching the pattern of the blade receiving channel and a second channel also substantially matching the pattern of the blade receiving channel, the first and second channels being substantially aligned with the blade receiving channel and extending through the guide track, the second channel being more narrow than the first channel to define a planar surface between the first channel and second channel extending along and adjacent to the second channel; a blade assembly comprising an outer housing, a cutting blade having a cutting surface slanting upwards from a lower leading edge to an upper trailing edge and one or more channel guides adjacent the cutting blade, the cutting blade being pivotably mounted in the outer housing blade assembly with the cutting blade being rotatable around an axis parallel to a longitudinal axis of the cutting blade, the one or more channel guides positionable within the second channel when a bottom surface of the blade assembly contacts the planar surface of the guide track.