Knife Sharpening Guide: Chisel Sliders

Additional sliders for the Knife Sharpening Guide by DROP_DB. Inspired by https://www.thingiverse.com/thing:4751487, but I did not use his file. I started with the CAD files I made for my other remix (https://www.thingiverse.com/thing:5751775) and adapted them to work for wood chisels, which commonly have a 25 deg and/or 30 deg bevel. Note that these are 3mm taller than DROP_DB's sliders (see https://www.thingiverse.com/thing:5751775). I didn't like other chisel sharpeners on thingiverse because they only allow the chisel to be clamped on the upper surface, using the top surface of the chisel as the reference surface clamped to the upper surface of the slider. My chisels don't have parallel top and bottom surfaces, and the bevel is referenced to the bottom surface, not the top surface, which means I have to clamp the *bottom* surface of my chisels to the *bottom* surface of the slider in order to sharpen them to the correct angle. These sliders allow chisels up to about 60mm wide to be