June 19, 2026
Description
Remix of @Brauer's nice design but with a magnetic screw holder added:
A dual 1/4 inch driver bit holder designed to fit 18v Makita cordless drills and impact drivers. Attach with an M4 x 10mm screw. Slide bits in or out from the front following the arrows. Works best with 3 inch long bits.
I added a magnetic screw holder that takes 15 or 30 Voron size 3x6 magnets. You can put 1 or two layers in depending on whether you want it stronger or not. There's probably a better way to optimize the design for larger magnets, but this is what I happened to have lying around.
PETG is a god material for this print. I would also recommend gluing the magnets in, but for me they were a reasonable press fit.
You will need to print with supports, but not for the magnet holes. See attached screenshot for support configuration.
License:
Creative Commons — Attribution — Noncommercial
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