Tiny Travel Screwdriver

What it is

A tiny screwdriver, storing seven 4mm Micro Bits (28mm in length) and attachable to a keyring or string on your gear. → Be prepared for that single or few screws that casually pop up, trying to ruin your day.

The forces induced by the applied torque are spread over a large area by the stored bits, stripping a screw is no problem with this design.

How to print

Recommended for printing is a 0.2 mm layer height and a 0.4mm nozzle or finer. The version in the pictures is printed with these settings in PETG. With that material adequate cooling is advised, I simply printed a set of two to give the small layers enought time to cool.

• My 4mm bits varied quite a bit depending on the vendor, some scaling may be required to get a nice fit (100% to 103% is reported back so far).
• If your bits are noticeably shorter or longer than 28mm, you may have 25mm or 30mm long variants. Use the provided alternate parts in that case.
• If your bits are rattling lengthwise, there are optional cushioning pads available to eliminate that (TPU advised). → Scale them first solely in the z direction to your needs (1 mm by default), after that scale them only in xy as the rest of the model is scaled. [Thanks to @TheCafeRacer for the feedback.]

What next

There may be improvements, modifications and deletions based on feedback given here.

Maybe, take a look at my other designs ;-)