RJ3-16L Drill Chuck Gridfinity Holder

This chuck and arbor came with my Jet JDP-17MF drill press, which I purchased new in 2001.  It was probably used on other import drill presses as well.  I have switched the drill press over to a keyless chuck, so I made this holder to keep the original one in.  In order to fit the chuck key into the space available, it has to slide in at an angle.  The version I printed didn't have any finger notches for removing the chuck from the recess.  I forgot to add them, and to be honest, they aren't really necessary since you can grab the chuck at the front and rear easily enough.  I added them in afterward, and have included both versions here.

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.