Hi I have a Wabeco mill with gecko drive controller, Mach3 and updated stepper motors.
I have on two occasions during running a program, had the need to press feedhold. On pressing Cycle start the x and y axis has decided to go on an unprogramed path, gouging the work and turning it into scrap! This has made me nervous regarding  using this function. Would it help if I were to press stop after feedhold. I know this is necessary if the z axis needs moving to change a cutter
What is the possible course of this malfuntion and how can I fix it.
I would be most greatful for any solutions.
Cheers
John.

Never personally had an issue with feedhold but I dont use it that much. What may be best is to Stop and then a Run From Here.
Hood

Many thanks Hood. Will do. What do you think is possible course of this?

I do recall a while back that if you did a feedhold on an arc the the restart could go wrong direction. Not sure however if that was a Smoothstepper issue or a Mach issue.

Hood