Using zigzag ramping to mill a helical path for a simple Groove

Zigzag ramping can be used with a simple Groove feature to create a generalized helical toolpath.

To produce this toolpath:

1. Set Max ramp angle to 90.
2. Set Max ramp distance to a large number, such as 1000.
3. Set Rough pass Z increment to a value less than the depth of the feature. In one pass around the Groove, the tool spirals down in Z an amount equal to Rough pass Z increment.

An alternative way to create the generalized helical toolpath is to:

1. Set Max ramp distance to 1000.
2. Set Rough pass Z increment to the depth of the feature.
3. Use the Max ramp angle to control the slope of the toolpath.