Originally Posted by
m_c
Can you post the G-code you're using?
A couple things that stand out, is you go straight to a G3 from G0, and I'm wondering if Mach is then using rapids for the arcs. In which case from my understanding, Mach isn't controlling the motion profile, it's simply passing the required movement to the KFlop to handle at rapid speed.
Also you don't need to continually define G17. G17-19 are Modal, which means once set, they stay set until changed. Most controls will default to G17 anyway, so you usually don't even have to define it.