You make a good point. I don't have a good answer for you on that one. They normally gash a ball with some rake. I don't know why they are still grinding the end rake at zero. To be honest with you , we still grind them that way here, unless a customer lets us know that they are going to drill with it. Then we will make it for the material they are cutting. I guess that no one has put up a big enough fuss yet. I think we'll start griinding the end with a rake on it. Maybe it'll catch on, eh? How much rake do you normally like? I'm thinking that 7 degrees or so would be sufficient.
__________________
Where Your Quality Counts!
www.toolgrinder.com
durkee@toolgrinder.com |