OK - so I started a print job, and left it running. While it was running, I may have had the Z axis issue mentioned elsewhere, as it appears to have stopped increasing in height, and was simply melting the existing layer), but it kept trying to print. Once it hit the side and dug in, this vibrated the print bed until 3 of the screws backed out. Then the print bed rotated and sheared off the RJ45 port and resistor. (see pics)
Printed from MicroSD, sliced with Snapmaker3D, version 1.6.2. Gcode available if you want it - but it’s 11.2MB.
How do we prevent this? and how can I get a new print bed?