My Y axis belt tensioner for AM8

thingiverse

Hello! First off, thanks to pheneeny for the original AM8 design. I'm now building it. I didn't like the Y-axis belt tensioner's design in the original. Fitting the details was tough and it seemed flimsy to me. Yes, I know there are designs in the remixes with handles and one tensioning bolt that won't push into a plastic part. That's what I wanted. I designed my own version using a pulling bolt. It's meant for two F623ZZ bearings as pulleys, but I think I'll design a GT2-16 pulley version later. ~~This is still in testing and work in progress because I think I'll probably have to lower the pulley by a couple of millimeters. It works as is now.~~ I've assembled the Y-carriage and it works great! Feel free to edit the F3D file. The sketch you need is Hook->Sketches->Sketch3. Here are the metal parts required: - M5 hex nut - M5x40 hex bolt (a longer bolt could work too - I used M5x50 in the photos because I didn't have a 40mm one) - M3 hex nut - M3x20 socket bolt - 2 F623ZZ ball bearings I've placed the parts as they should be printed. The hook part needs to be printed with some support under the "fork sticks".