Wood Chipper Blade Jig

I used to work at a construction equipment rental shop. We would send out blades from wood chippers to be sharpened in large batches.  When they came back they were all different lengths due to different wear on each one and for the chipper to cut wood efficiently the set of 4 blades had to be very close to the same length.  The previous method of using ones fingers to line up the bolt holes of a stack of 4 blades then check to see if the cutting edges line up with a ruler was not very accurate or quick.  I decided to make a jig to align the blades that included a small vertical slider to check the alignment of the cutting edge.

After measuring the blade’s dimensions with calipers and printing out a small piece to check to make sure I got the dimensions right I printed out the base with no issues.  The dovetail joint for the sliders, however, was very difficult.  For some reason the dimensions of the dovetail joint on the slider were different than the dimensions I specified in the CAD program so I had to resort to trial and error to get the dimensions right.  I suspect it was caused by the G-code generator rather than the printer since other parts of this project were being printed with accurate dimensions.