A few times of late, my Mini 1 prints have failed part-way through when the nozzle suddenly loses its elevation, and descends into the build plate with a terrible grinding noise. I’ve never witnessed this failure directly, but am usually near enough to hear it happen, and to quickly hit the kill switch before reconnecting and raising the nozzle. Subsequent prints are usually fine, though I’m not sure about my poor build plate.
Anyone else have this issue? Could it be a software, buffer, or USB communication issue?