Bit Carrier

thingiverse

This is a box to hold 8 1/4" hex drive bits. It is designed to be as small as possible so it can be used with an every day carry size screwdriver. I spent quite a bit of time trying to find where I could buy something like this. Injection molded plastic would be much stronger than a 3D print, and could be made smaller than what I achieved. But in the end, I had to design and print what I wanted. I printed this in ABS because I wanted the plastic to not be brittle and have good layer adhesion. The 1/4" hex drive screwdriver in the picture is sold by O'Reily Auto Parts. It is branded Power Torque with a model number: GM3828 (Edit: I've discovered that an identical driver is sold by Topeak, also sold by RUJOI https://www.amazon.com/Topeak-TT2524-Ratchet-Rocket-Lite/dp/B00P2BB2PE/ref=sr_1_19_mod_primary_new?crid=3LEVKTBR9F6ZL&keywords=RUJOI&qid=1681176980&s=sporting-goods&sbo=RZvfv%2F%2FHxDF%2BO5021pAnSA%3D%3D&sprefix=rujoi%2Csporting%2C140&sr=1-19) I'd love to get one of these designed for 4mm hex drive bits. Instead, I found a 1/4" to 4mm adapter so I could use 4mm bits with the 1/4" driver. I re-designed the holder for 4mm screws. This allows me to carry 13 4mm bits in the carrier rather than the 8 bits that would fit in the 1/4" carrier in approximately the same space. I would love to have been able to design this as a parameterized project so the number of bits could be easily changed, but FreeCad does not allow the number of elements in a rectangular array to be specified by an equation or reference a spreadsheet. Edit: I managed to drop this on a hard floor. It dumped & scattered the bits, and broke the latch. When I have time, I will attempt to make the latch more robust.