Summary

Features:
-Holds long screwbits
-Rotating back-end
-Bit friction clipholder inside
-pocket or belt slit-holder on V3

This is a screwdriver handle for medium long bits. For people in Scandinavia : It is designed for these bits bought in Biltema:
http://www.biltema.se/sv/Verktyg/Handverktyg/Skruvmejslar-och-Bits/Bitssats/Specialbitssats-36-delar-2000018812/
These are 36 all round bits and for this amount of screw bits and with this handle you get a super cheap good set of screwdrivers.
I have also uploaded the version V3 that has a slit for setting in belt or pocket edge. -not sure how it will work in the printer
UPDATE1:
It printed well, although the endcap doesn't stay on cause the snapfit doesn't work, so I had to put a small screw through the top. I just drilled a larger hole in the cap and a smaller in the handle, so the cap can turn freely. I also gave a bit of silicone lube to ease the friction. now they really work well, and the bitholder holds the bits from dropping out nicely.
UPDATE2:
V4 is latest improved version, the bitsnap holder is better and the cap may work to just snap on there and stay, if not, there is already a hole for a screw M2.