There was a few of these Seco inserts going around on eBay recently, 50 inserts for $50 plus postage. Vc (cutting speed) varies from insert brand to insert brand but typically its in the 100 to 200 m/min range for mild steel, but these Seco inserts are getting right up there with a Vc of 460m/min. They work just fine at my usual 100m/min or less.

I'm thinking these inserts are more aimed at the CNC market with very rigid machines and high speed spindles. Any thoughts?


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