Quote Originally Posted by Fivetide View Post
No Robin no burn mark
So it wasn't the tool being reluctant to cut that caused the Y axis to stick.

That leaves it wide open. Possibilities:- a mechanical glitch, the motor hasn't got quite enough welly at speed, a loose connection.

I'd start by running the Y axis for a few fast passes while listening and watching it like a hawk. See if you can localise anything.