Update 2/15/2021: Cut corners to reduce weak points on tabs.

The ends of the straps on my Chaco Z/Clouds are pretty long, so in addition to loosening over time they get caught on stuff more frequently than I like.

Thus, I made these keepers to keep them controlled. They work great.

Prusa

I3 MK3S

No

No

0.2

100%

I recommend PETG for these, seems to hold up well. I initially printed these in CFPETG and they seemed great, but ended up being too brittle on layer lines so they'd snap in half. That might be my settings, might be the material, I don't know for sure at the moment. PLA might be fine, but that will require testing.