Manufacturing steps for milled features with bottom radius regions or cross sections

Features with a bottom radius are manufactured with some combination of the operations shown below.

1. The Rough pass cuts starting at the top and either roughs down to the bottom of the feature (if you are not finishing the bottom) or leaves a finish allowance at the bottom.
2. The stair steps of the roughing operation are knocked down by the Draft flat operation. This operation takes only a single pass at each Z level.
3. The stair steps of the Draft flat operation can be further smoothed by the Draft radius operation. This operation also takes only a single pass at each Z level.
4. If the bottom of the feature is finished the Flat bottom operation is performed next with a flat-end mill.
5. The bottom radius and the walls of the feature are finished by the Finish pass.
6. If the feature has a tight corner on the floor that could not be finished by the flat bottom operation, a Corner operation is performed.

Rough pass Draft flat Draft radius Flat bottom Finish pass Corner