HIYA RUSS not neccesarily a SUB program to step over or down each pass can do a LOT of work in place of a CAM. The real question is this slot really a pocket instead of a slot. and how deep is it and how wide is it.
You really do need to do it with a ball end mill as a flat nose mill will scallop the surface cutting the arcs.
(;-) TP
Yes, I was assuming a pocket, same width as the ball endmill.
I was also seeing the SUB cutting a lot of air by just shifting the final profile for each pass (.05" in the top example).
I was trying to figure how to do it as in the bottom illustration .... 10 passes without wasting time cutting air.
I did do it in SCam , each pass individually but it was painful.
Thanks again TP,
Russ