Rough
Rough the part leaving stock in Z and X for finish paths.
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Figure 8.29: Roughing
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Rules for Roughing
- Start away from the face of the part.
- A common practice is to use the same tool for both facing and OD roughing when possible.
- Leave a constant thickness of material over the part for the finishing operation.
- Skip over grooves and other features that will be rough or finished with other tools and operations.
- Consider moving the tool vertically at the end of each path to remove scallops.
- Extend the path past the back of the part for cutoff tool clearance.