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Best milling insert
The discussion that Harold and Jon had in the recent thread on HSS vs.
Carbide has prompted me to ask, "What is the best performing milling insert to use on smaller milling machines?" My vote has been for the Sandvik R390 insert family. As I have milling insert cutters from 1/2" to 3", and a ton of inserts in grades for AL and steel, I'm unlikely to change. I've found my old beat up Bridgeport 1J can't handle them. But, they work wonders on my Excello. Its a taper 40 knee mill machine with a 2J style milling head. Karl |
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