A5S major Z axis failure

Five hours into an otherwise successful print, the hot end was raised about 10mm and then sank into the print. It buried itself about 1/3 of the way, melting everything in its path. I have never seen a failure like this before. I just happened to be watching it at the time, or the results might have been much worse.

Any thoughts on this one?


  • Samuel PinchesSamuel Pinches Posts: 2,597Administrator
    edited May 18
    @Razai - gee, that's pretty bizarre! If you reprint the same file (maybe try with filament unloaded....) , do you get the same results? Which firmware, and were you printing from SD or via USB cable?
    Post edited by Samuel Pinches on
  • RazaiRazai Posts: 19Member
    Always from an SD card. Same firmware setup as always. The machine has over 1000 successful hours on it. I have had to nurse it along recently as it has shown other normal signs of aging, but this one baffles me. I don’t plan on running this particular print again any time soon, and I now don’t trust the printer unless I can sit right next to it. If I hadn’t been there, that would have been a real fire hazard.
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