Hi guys,

We have a little 600x900 hobby CNC machine, have run it several hundred hours no troubles over past 4 years. It has probably not been used a year but I have blown the dust off it and gone to run a small job today and the X axis is moving at 1/5th the distance it is being commanded to.

Jogging is 1/5th the speed, 1/5th the distance (readout says 500mm for a 100mm physical movement), jobs are cutting scaled 1/5th their correct width. They are open loop steppers but never missed a beat before.

I have actually fixed the problem by changing the steps per mm in configuration to 1000 instead of 200 as they should be, and were, and what the Y axis is set to - which is still working correctly.

Bit of a strange one, is there anything else I've overlooked? I don't think Mach3mill will have been opened since the last job the router ever did, nevermind settings changed. Scaling beside axis are all set to 1.

Thanks in advanced of course!
Josh