I thought Gertsen's design looked great, but whatever filament and scaling I used, after a few weeks of (semi-intensive) use, bits would start falling out, or the holder would simply snap.
This remix is a lot sturdier and uses 8x2 mm neodymium magnets to hold the bits in place, rather than relying on a friction fit. The bits go in and out with no effort, but still they stay in place even when using or storing the drill up side down.
The magnets can be press-fit in place after the print and provide an additional feature: the bottom side can be used to hold e.g. a drill or some screws.
A few more changes:
- Defaults to being screwed to the left side of the drill. This stops the (longer) bits from scraping your arm if you are right-handed.
- Removed the text, so you can easily mirror the design if you are left-handed.
- Holds 5 instead of 6 bits, to give it bit more strength and allow room for the 8mm magnets.
- Removed part of the bottom ridge, which interfered with the body of my drivers.
Use bed-supports only, to support the holes for the magnets. The bolt hole on the side prints just fine.