If you would like to machine an arc on a surface you will not be able to do it with tcc12 I just went thru this trying to get a curved drawer front proto finished . I run bworks on rover b 4.35. I am not familiar with mach3 or g-code programming. But i achieved the curve on a 7*24inch by 1.25 thick drawerfront by creating the desired curve on the non-standard side of the workpiece.to make the arc repeat horizontally acrosst he workpiece i used a z-step 18mm at a time w/a 3/4 inc pcd tool.I had to add a lot of repeats but it worked. Hopefuuly this helps |