CNC Tooling

[Cory]

Originally Posted by craigboez

I thought I'd revive this excellent thread from the dead. Getting ready to purchase some new tooling, and I see there are usually several options for the amount of corner radiusing. For example, Maritool offers .008, .015, .030, .060, and .090 radius options for a 1/2" endmill. Never having purchased one I'm not sure why to choose one over the other. I'm assuming that the biggest radius will lengthen tool life the most, and since we are mostly doing thru-cuts on everything the radius will never have an impact on the cut geometry. Anyone care to elaborate on this?

You have it right. Larger radius will reduce the chances of edge chipping and increase tool life.