Holder for 4mm hex bits

thingiverse

This is a holder for small bits that are just 4mm in size. With it, you can use your favorite battery screwdriver with the small bits that you have. I was able to put my trusty battery screwdriver through its paces without breaking this adapter, even after three months of regular use! Made from durable ABS plastic, I gave the holder a cold "acetone bath" for two hours at a comfortable 25 degrees Celsius. This important step helped to give the adapter extra strength. Depending on how well your printer is calibrated, you may need to enlarge the nut part by a few percent in both the X and Y axes - but not the Z axis! I didn't have to make any adjustments myself, fortunately. PS: If you decide to print one of these adapters for yourself, I'd love it if you could share a photo with me saying "I made one"! It's no trouble at all, and I'll really appreciate seeing your handiwork.