Updated the adjustable side of the belt tensioner. Made the hole spacing for the belt clamp wider to allow a longer screw to be used without interfering with the 10-32 screw. Also added a slight angle at the interface between the fixed and adjustable parts to essentially create a dovetail slide.
Belt tensioner for the openbuilds GT2 3mm belt. it is designed to use 4 4-40 x 1/2" long screws for the belt clamps and a 10-32x1" screw for the tension adjuster.
Printed with both PLA and ABS. Both seem to work pretty well. you need to lightly file the interface edges on the round adjustable slide to get it to move smoothly