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 capÂ
- 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
ratcheting mini screwdriver
by FreddyZ · original on Printables ↗
Hobby & Makers / Tools
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axle.3mf
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ratchet.3mf
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rear socket.3mf
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main-body.3mf
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rear cap.3mf
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keychain cap.3mf
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ratcheting screwdriver PS.3mf
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ratcheting screwdriver.stlDEFAULT
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ratcheting screwdriver standalone.stl
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ratcheting screwdriver standalone PS.3mf
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rear cap no keyring.3mf
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rear socket loosey.3mf
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rear socket loosey goosey.3mf
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