The BOb was one of cnc4you.uk's items.

It has been running fine with a pen in the tool holder for weeks, all I did was move it 10' test it and the fire the torch for two seconds.

i don't see how it can be the bob as that would not affect the dro's which are running way too fast.

the e-stop circuit is relay isolated so the only thing that could be bouncing is the relay and that's doubtful. It's not the same as an e-stop, that just displays emergency stop button pressed I think, this displays emergency stop requested.?

its baffling and if it is related to the torch firing then I am at a loss as to what I can do, I spent a lot of effort rewiring it with cup screened cables, star earthing, ferrite blocks and so on, I was thinking it would be impregnable, don't see what more I can do.