I bought a Creality glass bed which is 4mm thick, when I tried the “Auto Align Z” the first part of the bed levelling process the nozzle went straight into the new bed. Thankfully I was able to turn the printer off before any damage was done.
Should I be able to use a 4mm glass bed on the Sovol 06 and if so how do I carry out the bed levelling process with out damaging the printer or the glass bed?
No, the probe on the SV06 is an inductive probe. It requires your bed to be metal. Glass and other non-metal print surfaces won’t work. It effectively can’t “see” the bed when it’s not metal, so it can’t figure out where to stop.
There isn’t really a workaround short of changing out the probe for a mechanical end stop/probe or maybe a capacitive probe (I’ve never used those - but my understanding is they can sense non-metallic objects including glass).