ratcheting mini screwdriver

I was told that it'd be impossible to fit a ratchet mechanism inside a tiny screwdriver, let alone hold more than a single bit. This is to prove that person wrong ;)

also check out the Print-In-Place version

A reversible ratchet mechanism didn't fit the budget so I opted for the big brain move of simply reversing the screwdriver. Yes there's another receptacle in the back ;)

- fits 4x28mm bits such as the iFixit ones - 30° ratchet with clockwise and CCW socket - freely rotating end cap - optional keychain attachment point in end-cap - optional keychain front-cap with tight pressfit - print in one go (dual color too) The low budget LTT screwdriver look or any other dual color look for that matter, can be achieved by a simple filament swap at the 2mm mark. Print time is under 1h and total cost in Prusament is <40ct which means its only 1/100th of the shipping cost of a real LTT screwdriver to europe 💀💀💀

Print everything in one go .3mm layer height and .5mm extrusion width (Prusa .3 draft settings). No supports . 57min for just the screwdriver + 18min for the optional cap PETG is the way to go but PLA works too but creeps and I haven't done any long term study on how the compliant springs hold up.

Assembly is dead simple thanks to the 5 piece assembly

- axle through main-body - ratchet onto axle (check orientation) - free spinning cap onto axle - rear socket onto axle (press hard) should the tolerance for the rear socket be too tight, fear not I added some variations that are a bit more loosey goosey.

STEP included in case you want to improve the ratchet mechanism or you have a better idea on how to attach a keychain.

0.3mm layer height & 0.5mm extrusion width

otherwise its gonna be wonky