Designed so I didn't have to cut into my guitar strap ends to fit them around the jack endpin. Simply insert the jack endpin on your guitar in the large part of the hole and pull to lock it in place.

I recommend printing with PETG at the very least because the integrated strap button will break off very easily with PLA. You could also try reinforcing the layer lines around the strap button with a CA glue shell.

I'm working on a version with an M4 nut insert to attach a metal strap button and another with an integrated strap button that uses an M4 nut/bolt as reinforcement, but if you don't see either here yet feel free to remix your own.

CC BY-NC-SA 4.0