The makerspace I print things at has a rule about mostly just using PLA and PET. Technically other filaments can be used with permission (except ABS) but unless it's really really going to make the difference I would rather keep it to PLA.

https://preview.redd.it/oiqn1x3g8q0d1.jpg?width=1500&format=pjpg&auto=webp&s=9ba7d1661aff1b97aacb9d7f66c72e331eacb3cb

Basically I want to build more pieces like the corner pieces you see there as well as a few variations like different or no angles. The strap runs through these pieces freely and eventually the immense tension of the strap pushes them in to clamp the piece. The strap moving freely is crucial as it allows for the tension to be even across the clamp. I would use these in conjunction with the existing clamp.

I am not dreaming of these lasting forever and I expect I will need to make everything thicker considering the weakness of 3D printing layers and PLA but I am trying to figure out what ballpark I should be looking at for infill percentage. If I had forever for these to print I would just set it to 100% but I am hoping I can get away with something lower? Should I go with bigger or smaller resolution?

In addition you see how these pieces have like exterior ridges? Any idea if those might serve a purpose past the aesthetic.

As far as print orientation I was imagining it would be best to have the layers perpendicular to the vector the strap primarily exerts force. So for say these corners I would print them so that the layers run parallel to the way these would sit if you put their corners down on a table.

There are some designs for this already on printables and people claiming they are just using 25% infill? That cant be right?