I was under the belief that tool bits were short lived and needed to be constantly replaced. That the constant resharpening of tools just wore then away. When reading through the thread on models for grinding HSS lathe tools I came across references where posters had said they had been using some tools for years. If that is the case I think that I have a lifetime supply of tool stock. I am sure that the answer to this question is it all depends. Looking for some feedback on the life span of HSS tooling.