This jig makes diy cat scratchers much easier. I used a 1x2 cut into 3 6” pieces. Glue them one flat and two on their side like in the video . Drill holes to mount a razor blade. The razor blade must have the notches like in my blade to have the screw seat into the blade , however it is not necessary to do it this way , it was a preference. The purpose of this jig was to rule out any human error when using a box cutter and a straight edge. Each cut ensures they are all cut at a 90 degree angle t