This was just a simple test. It is done in ArtCam and transfered to Mach3 in .tap format. The 1/8" straight bit needed to plunge 1/4" into the material and make a simple circular cut along the vector. The photo shows the uneven line along the cut circle. This is the starting and finishing point of the cut.
Can anyone tell me why is this happening? It should be a perfect circle.
Thanks