I have some questions about sppeds and feeds relating to depth of cut. In calculating S&F how does DOC come into play I have been playing around with S&F in Mach3 it asks for Material, Cutter type, Chips per tooth then you hit calculate and it comes up with a spindle rpm and IPM but it doesn't say anything about DOC. It also doesn't let you choose Cobalt as a choice for bits. My question is how do you determine the DOC with the IPM and RPM that they give you?