02-29-2016, 02:02 PM
Yeah, I've never been real impressed with brazed carbide. I do keep a box of brazed bits on hand in case I need to do something special in hard material, such as a form tool.
They usually seem to not have enough or sometimes any front or side rake from the factory and need to be modified to work. Of course, you need the correct (expensive) wheel on your grinder (or better yet a dedicated grinder), and said expensive wheel doesn't like steel, so you have to have a second wheel to dress the supporting tool shank back before you can do anything to the carbide... sigh.
Now... inserted carbide, that's a whole other kettle of fish. That technology usually has correct tip radii, front & side rake, and well-functioning chip breakers formed right into the insert. Good living.
They usually seem to not have enough or sometimes any front or side rake from the factory and need to be modified to work. Of course, you need the correct (expensive) wheel on your grinder (or better yet a dedicated grinder), and said expensive wheel doesn't like steel, so you have to have a second wheel to dress the supporting tool shank back before you can do anything to the carbide... sigh.
Now... inserted carbide, that's a whole other kettle of fish. That technology usually has correct tip radii, front & side rake, and well-functioning chip breakers formed right into the insert. Good living.