Hi I am experimenting with surface - finish - flowline toolpaths.

However when I backplot the toolpath I see that the tool is not being held down between the end of 1 pass and the start of the next. The tool is rising in Z for a few mm to clear the part, then moving across to the start of the next pass before going down in Z - before cutting the next pass. This very small 'hiccup' is causing my cnc machine to crash as it can't manage the change at the speed I am driving the rest of the normal surface flowline toolpath at.

Ideally I would like the tool to stay down on the surface of the part between passes - but can't find an option to do this.

I am cutting a 3d surface imported as iges into MCAM9.
I generate the flowline toolpath - with retract off -
The parts about 200mm by 200mm and 60mm deep.

Any advice gratefully received.