y axis shift  

RE: y axis shift

the shift is almost definitely a y crash. you can try disabling crash detect or try a different infill pattern or infill print speed

RE: y axis shift

David-a66

Thanks for the info. I have a MK2.5S so I guess I don't have crash detect but I'll try the infill thing the next time I have a problem with a smallish object.

RE: y axis shift

A photo might help, too.  But a nozzle catching on plastic that has curled is pretty common. Especially if the same gcode if failing at the same place.  It's also possible to have other causes, but simplest is the part buildup.  If your part is using a low infill percentage, like 5%, the risk of curl snags when solid infill layers start goes up quite a lot.  As David said, slowing infill speeds helps, also slowing the cooling fan can reduce the curl. 

RE: y axis shift

Tim-m30

Thanks for your response. I usually use 15% infill. But why would the problem occur at the same place? . In one case, I retried the print and it failed in the same place. I then re-sliced it after rotating 90 deg. (just for the heck of it). It failed in the same place!  In the last case, which happened this afternoon, I was printing the gently curving side of a jewelry box. The layer below the one that failed was, essentially, the same as the failed one.  The next time this happens, I'm going to slice the bottom off of the object until I only have a few mm before the fail. I'll try to print it again to see what happens. I'd really like to get this resolved so I don't have to go back to S3D all the time. As much as I hate to say it, S3D never fails me. Thanks again for your input.

John

RE: y axis shift

Snap a picture and drag it into the text box, select link to media file before clicking insert. Without a picture that shows the failure, there are too many variables to consider. And any wild guesses probably won't be helpful.

RE: y axis shift

Here's a picture of today's failure. I re-sliced it with s3d and it is still printing and well past the failure point. If my problem is a mechanical failure such as a catch, why doesn't it happen with s3d and why always in the same place? Like I said, s3d has never failed and this my fourth failure with PrusaSlicer in the last week. I'd like to say it's a software problem with Prusa but probably not. Maybe it's the phase of the moon! Anyway, I really appreciate your time. I'm kind of old but if you can educate me, go for it. By the way, your posting dates really confused me until my wife, who is Polish, reminded me that most of the world uses day/month/year while those of us on the other side of the pond have decided to use month/day/year to go along with our inches, feet and miles.

RE: y axis shift

also try different type of infill patterns

RE: y axis shift

The image isn't very helpful. It is too small and is of only one section of the part.  

If true, that the exact same part sliced with S3D works, and then sliced with Prusa Slicer fails; then it is something you are doing with Prusa Slicer settings.  You're making some change or S3D has some preset that needs to be set in slicer.  But without more info, can't offer much advice.

ZIP the stl file you are trying to print, and drag the zip into the text box to upload it, then insert it into the post.

It would also be handy to know what printer you have, bed type, what material you are printing, and what your ambient temps around the printer are.  

But in the end - Prusa Slicer works very well for most of us; there are some who prefer S3D, some who prefer Cura, but these preferences are for subtle things, not that one works and the other always fails. I've never used anything but Slic3r and Prusa's upgrade - it have always worked well, and my print fails are due to part design and my choices slicing, not the slicer.