开云体育

Grinding tool bits has commonly been "lesson #1" in machine shop classes because it is so fundamental.? And if you don't get it at least somewhat right, nothing will work out very well.? Also, once you get a good idea of clearance and rake angles, you will understand that the same concepts apply to other cutting tools like milling cutters and twist drills, or even a bit used in a shaper or planer..

I recommend a typical 6 inch bench grinder and no smaller.? You CAN go smaller, but things will go a lot slower.? And I suggest trying to locate the grinder a little bit away from other machine tools, or make some barrier, to help keep grinding dust away.? Grinding dust is not good to get on lathe ways and such.

And consider getting a "wheel dresser" to make the wheel nice and straight across again when it gets rounded or cupped.? There is more than one type.? The most common has a bunch of wheels with teeth such that when you look at it you ask, "how in the heck can this possible work?"? But they do.? Another type has a diamond impregnated flat block on the end of a holding handle.

You can get fancier sharpening tools such as water cooled ones, but you really don't need them.

I also recommend getting a diamond hand hone.? This is an extremely useful little tool that way too many hobbyists don't know about.? After grinding the tool bit, a few swipes of the hand hone really puts a sharp edge on it.? And it can also be used to refresh a slightly dulled edge, even with the tool bit still mounted in the tool holder.? You don't need a really expensive one (like you might find at a supply house like MSC Industrial).? Something in the $10 to $30 price range should be fine.? McMaster Carr has some low priced ones and there are low priced ones, and sets, on Amazon.

Charles E. "Chuck" Kinzer