First cut, first contact and SHOULDER! The carbide insert is broken. When I say first cut, I mean one or two thousandths of a contact, and that's all it takes. I'm really disappointed with this parting tool, I've always had good luck with Accusize products but this is a complete failure! Can't even say I got my money's worth with this, it took more time to set up than it took to get anything done. I definitely threw my money away for this!