[mfg-smartcam] R levels

[JNB]

Hello group,   Am I missing something? Why would you want to have an R level of 0.0 on any tool? This leaves no room for error when the operator decides to adjust the depth .050. Drill's don't like slamming into the part before the cut. I do programs with over 60 tools and many differant R levels and don't have a problem with it. Is this a new practice that I've not heard of in my 25 years of machining?   Jeff