Customizeable Rectangular Case

This is a simple customizer for making a rectangular case with rounded edges. I like to buy a lot of unconventional and silly little electronic things, but I usually can't get cases for them, and they always feel fragile. I wanted a simple solution to make a variety of cases.

Print in TPU. Shore 85 (ninjaflex) generally works best, but shore 95 (ninjaflex cheetah, most no-name brands of flex filament) will work for a lot of purposes too. I've found it easiest to print hole side up, with internal supports enabled, and use a nipper/edge cutter to pull the supports from the TPU (they rip off pretty easy).

A sample STL is included, which is 9x6x3cm.