Y axis belt keeps slipping out of tensioner!
I bought a pre assembled MK4 back in January. All of a sudden the other day the Y axis belt slipped out of the tensioner. When I went to fix it I noticed that they forgot to put the screws in that are supposed to hold the belt in. I put some in and reassembled it and it worked fine for a print and then failed again. It's done this a third time now and I'm not sure what to do to fix it so if doesn't keep happening?!
I'm sure it doesn't help that I'm printing ASA mostly, in a Lack enclosure.
I'm about ready to glue them in, but I don't really want to because that'll make it extremely difficult to repair or anything later on.
Does anyone have any suggestions?
Thanks, Mike
RE: Y axis belt keeps slipping out of tensioner!
loctite?
We will do what we have always done. We will find hope in the impossible.
RE: Y axis belt keeps slipping out of tensioner!
I think it's the belt ends slipping out of the holders, so I'm not sure that loctite would really help. The screws that are supposed to pinch the belt in are still in place.
RE: Y axis belt keeps slipping out of tensioner!
probably silly of me to propose this, but since you bought it preassembled, isn't this a warranty case and should be addressed by prusa support?
RE: Y axis belt keeps slipping out of tensioner!
Good point. I did talk to them the first time but I thought I had it fixed. I'll get ahold of them again today.
RE: Y axis belt keeps slipping out of tensioner!
Their suggestion is to reprint it in ASA of course. I'll give it a try and hope that took hold together long enough.
RE: Y axis belt keeps slipping out of tensioner!
How has the reprinted ASA tensioner been working for you? I'm having the same issue, also mainly printing ASA in an enclosure.
RE: Y axis belt keeps slipping out of tensioner!
I ended up jamming enough scrap plastic into the tensioner to hold it tight enough for one more print cycle. Replacement ASA parts appear to be working well after several prints (but it did take a couple weeks the issue showed up in the first place).
RE: Y axis belt keeps slipping out of tensioner!
Printing your own part will be stronger. .2mm and 4 profiles I find is good. 4 profiles to keep the bolt holes from collapsing when bolts are tightened. Helps prevent bolts from coming loose.
I found the screws that hold the adjusters to the Y axis can come loose also. What I did in the end was convert to a solid mount for the Y axis belts and used another Y tensioner design.
RE: Y axis belt keeps slipping out of tensioner!
Just for the record - same problem here 🙂