Summary

This is a generic belt tensioner designed to be mounted on a single post (6-32 screw). The STLs are sized for M3 tensioning bolts and (trapped) nuts.

Instructions

I intended this to be for the X axis on the printrbot GO, but it turns out there's not enough space behind the extruder for this design. Consequently, although I've printed this out for a test fit, I haven't actually installed and used it. The key functional aspects are borrowed from the Y axis tensioner I made and am using now, so I believe it will work as designed. Drop me a line if you try it and find it needs tweaking.

Post Mounted Belt Tensioner