I usually make Mill Volumes and Mill Surfaces to create my own sequences to rough out a part rather than make use of the Mill Window based Roughing / Re-Roughing Sequences that Creo seems geared toward. That is how I've been taught how to program and have been steered away from using the latter options. It seems safe and usually predictable. I am curious to know how others feel about the Roughing / Re-Roughing method of getting the job done. It looks to me like it could potentially save a lot of time, but the re-rough tool paths seem very unpredictable. I did try a couple of simulations and one of them had a big gouge that I couldn't get rid of in the Re-Rough.
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