Y axis only moves forward

[PJTX]

If your belts are slipping, check this thread for some tips:

[Resolved] Belt not tightening, just slips

I’m on step 6, at 3:40 in the video. My belt is looped through the belt clip exactly as shown, and I have a good 4-5 inches of belt looped back on its self with all teeth meshing. As I tighten, the teeth just slip, over and over and over. I’ve tried to tighten the belt maybe 15 times now, spent well over half an hour on it. If I get to the “loose guitar string” stage everything seems fine, until I slide the X carriage back and forth once and the teeth start slipping until the belt is way t…

You’ll want to use a zip-tie, some electrical tape, or some heatshrink to keep the teeth engaged on the looped-back portion of the belt.