Hi,
I have an interesting problem with my CNC router. I create drawings in AutoCAD, generate the CAM files with SheetCam, and drive the machine with a SmoothStepper.
I noticed that the inner corners of some square shapes I was contouring were more rounded than the radius of the cutting tool. When I slowed the Y axis right down on Mach 3, the squares were no longer squares.
After slowing the Y axis down, the router cuts in the Y direction, and while the gantry decelerates before it gets to the corner the X axis starts moving. So I get a parallelogram rather than a square.
I would expect that when cutting a square that the routing on one axis should complete before the other axis starts to move. Very peculiar.
Help/advice appreciated.
David