Start of print build plate crashes into the bottom!

[jasondavidblake]

When a print is done the print bed goes to the bottom.
When starting a new file it sends the build plate crashing into the bottom and clicks. This is starting to cause an issue with the sensor.

[djeZo888]

I posted a workaround. Using it on my three X1C machines and haven’t had a crash since:

Grinding sound before home since latest firmware update

Maybe the reason why this happens is in machine G start code: ;===== machine: X1 ========================= ;===== date: 20230130 ===================== ;===== reset machine status ================= G91 M17 Z0.4 ; lower the z-motor current G0 Z12 F300 ; lower the hotbed , to prevent the nozzle is below the hotbed G0 Z-6; G90 ... G91 sets to “relative” mode, which then follows by G0 Z12. If bed is already at lowest… then disaster follows. EDIT: If my speculations are correct, then following modi…

[jasondavidblake]

Thank you ill add the gcode. I keep forgetting to move the build plate up.