Where Dry Milling Makes Sense | Modern Machine Shop
Oct 15, 2000#0183;#32;Stainless steel can be gummy enough that coolant may be needed as a lubricant when a ballnose or other roundprofile tool is used. That was the case with this Stavax 420 stainless steel mold core. When dry milling wasnt producing an acceptable surface finish, the operator switched to using liquid coolant and the finish improved.