There are a lot of "folding knife" style key holders, key bars or key bones. Most, if not all of them, require screws with the correct length. Screws that needs to be re-tightened now and then, to give the right friction or just to keep it from falling apart.
This key holder integrates a standard 4 mm nylon cable tie instead, so you can keep any number of keys in it. Just print and zip it up!
KH_A_top.stl |
KH_B_bottom.stl |
KH_C_shims.stl |
KH_D_Optional.stl |
KH_D_Optional_2mm.stl |