ACAT Grinder 12615 Gridfinity Holder

This generic air angle grinder is fairly common in the aircraft maintenance industry, and is typically used with a variety of grinding, sanding, and polishing discs.  I included a recess for the wrenches that are included with it, and are used for changing arbors.  Most common quick disconnect fittings should fit within the squares used, but I left the end of the recess open so that longer air fittings can protrude into another square, or into void space at the edge of a drawer (since toolbox drawer dimensions are rarely perfectly divisible by 42mm).  I likewise left an opening in front of the collet, so that it can lay in the tray with a bit or arbor installed.

Like my other Gridfinity models, the base is altered to accept 6x3 magnets as a press fit, with the upper surface of the magnet holes modified to make the slicer bridge across correctly for a clean result.  Due to the size of this model, I have included sacrificial “mouse ears” in the CAD to give the ends more surface area to help prevent them warping off the bed.  These will need to be removed after printing.

The unit pictured was printed out of Overture PLA on my bear upgraded Mk3S+, using a 0.6mm nozzle, at 0.3mm layer height.

https://www.yardstore.com/acat-90-deg-mini-die-grinder