5/16 inch carriage bolt optimized mounting bracket for Ender 3 - Filament holder DELUXE

thingiverse

I designed this part to replace the Mounting bracket of the original Ender 3 - Filament holder DELUXE. https://www.thingiverse.com/thing:3114139 Living in North America, M8 threaded bolt is hard to come buy. So I found some 6 inch long 5/16 inch carriage bolts at home depot and adapted this part to work with them. The skateboard bearings fit over well with a little play, but once you tighten everything up, the play mostly disappears. The head of the carriage bolt is recessed quite a bit into the mounting bracket to give extra thread on the other end for a nylon lock nut. Printing: I printed this with PLA. I recommend a 1.6mm layer height. I printed it with 2mm first and the threads were too tight.