Drill adapter / cover for Timemore C2 coffee hand grinder

thingiverse

EDIT: DOES NOT WORK: the applied torque is to high - the smaller hexagonal pocket gets chewed while grinding (tested with carbon-fibre filled PET-G) Let me know, please, if you persuade it to work with some other material. So far, it can be used as baseline for creating travel lid. ORIGINAL: Easily printable drill adapter for hand grinder Timemore Chestnut C2. The adapter is ment to be finished by glueing some old 1/4" screwdriver bit (6.35 mm) into the top hexagonal opening (preferably the hexagonal shank of it only - grind off the screwdriver head). The glued in bit shall function as axial stop as well - the part is not functional without it. When glueing, think about retaining groove present on some screwdriver bits - expose it in correct distance from the printed part to enable its' retaining function. Do not glue the bit with the groove hidden in the printed part as it would decrease the contact area considerably. (I found that chopping of 26 mm long rear end of the screwdriver bit is just the right length to expose the retaining groove) I assume printing with any common material should do, jus provide sufficient number of perimeters around the hexagonal openings. If you are worried about beverage contamination, use foodsafe material. (Wrong, CF-PET-G did not do, I'll try nylon (PA) ASAP) The design is to be verified and tested yet. I will update the post shortly and prvide some photos (written 19.9.2022). - the hexagonal opening are quite tight but with benchpress or hammer you can persuade it to work (do not hard press on the grinder shaft while in the grinder / bearings) - the outer diameter could be a litte larger (+1 mm I would say)