Posts: 4,427
Threads: 183
Joined: Feb 2012
Location: Missouri, USA
09-02-2013, 11:44 AM
(This post was last modified: 09-02-2013, 11:47 AM by Highpower.)
Tom,
There are a couple of things you touched on in this video that I would like to see more videos on.
1) A demonstration of how you are able to grind the miniature internal threading/boring bar clearance and relief angles on those tools. It seems to me that you would need a razor sharp edge on a thin grinding wheel to cut the reliefs on those tools. Perhaps you could take the mystery out of that for me.
2) While I know it's not a common thread in most shops these days, I would also appreciate a video (or 2)
on grinding and cutting with square thread tools.
And
thank you for all your other videos that you have produced thus far.
Willie
Posts: 3,798
Threads: 184
Joined: Jun 2012
Location: Farmington Hills, Michigan
Willie,
The smallest of those tools were probably ground on the wheel of a surface grinder, but only because it's easy to get a sharp corner on an aluminum oxide wheel and those were readily available on a surface grinder. I do have a 100 grit aluminum oxide wheel on my bench grinder and it would work equally well. The trick is to get a nice sharp corner, but the width doesn't really matter.
Square threads are on my "hit list", so you can expect to see a video on cutting them eventually.
Thanks for the appreciation.
Tom