Bitman Utility Belt

I like to keep sets of bits with the tool or job that needs a particular assortment. So I designed this to scratch that itch.  It comes with a variety of bases for attaching the holders and a body which can screw into any of the bases.  Standard hex bits then snap in or out of the holders.  As a bonus the body can be unscrewed from the base and used for finger tightening.  It can easily be combined with a carabiner in a number of ways.

There are three possible bodies you can use.  First is bitbody-PLA which I recommend if your printer/filament can manage it.  It has PLA in the name because it is the preferred version if you use PLA; not because PLA works best. Its mechanism is shown in the render with the horizontal cut.

Second is bitbody-PETG.  In this case, PETG is recommended because its probably the cheapest and easiest to print other than PLA.  PLA works but had a 5-10% failure rate.  It is shown in the render with the vertical cut.

Finally if those don't work for you the bitbody-Alternate is pretty much guaranteed to work.  It is not as nice to handle and can be awkward to insert or remove bits

Whichever you use, after printing they need to be freed up.  Take a #2 philips head hex bit and force it in point first until it bottoms out. Then jerk it out and put it in properly. At that point it will be much easier and you should be good to go. It usually takes some effort but if you can't do it by hand, it will need to  tune your print settings.  (caveat: Removing the bit the first time can sometimes be difficult and I have used pliers to tug the bit out.)

There are two bases for use with gt2 belts.  One of them clamps down on the belt and remains fixed when the body is screwed in.  It also serves to join the ends of the belt by inserting each end halfway before tightening.  The second base remains free to slide on the belt.  The base with a slot can be used with a zip tie. The base with a hole works with keyrings lanyards or whatever.   

The design assumes 0.4 nozzle and 0.2 layer height. You must use those values (or a submultiple). Print in the given orientation, 100% infill, without supports.  You probably will get a warning telling you to add supports. Ignore that. Unfortunately the models need good layer adhesion, so lean towards the strongest layer filament.  I also printed by object (instead of by layer) in hopes of improving layer adhesion a bit.  That said, every filament I tried worked more or less. Surprisingly the worst was ASA which I expected to be the best! YMMV