Originally Posted by
moldmker
First, make sure you're using the the Engrave feature under the 3-axis menu and not the 2-axis menu.
Also, make sure your geometry is at the depth you want to machine it at.
The Depth value will obviously adjust the Z-depth of toolpath from the geometry, but this can be set to zero and even given a neg. number to raise the path.
Couple more things to mention, the arc will be broken into small, straight line segments.
And the path is calculated from the tool centerline, so flat bottom tools will show a slight deviation. Certainly not an issue in your app.
Sometimes it's easier and cleaner to just hand code a feature like this, using the CAD data for the coords. (one arc is just a single line of code).