Easiturn 3 Radius Problem

[skatz]

Hi All, I have an Easiturn3 with PNC3 Controller. When i program it to machine a Radius, quite often the tool seems to lose position and dig in part way round the radius. Has this problem happened to anyone else?

Thanks

[Mr Magoo]

Try increasing the feedrate. Stepper motors don't like v slow feeds.

Could also be mechanical (tight ballscrews or gib strips?).