Search found 6473 matches

by GlennW
Sun May 20, 2018 8:29 pm
Forum: General Discussion
Topic: Grinding wheel hole enlargement ?
Replies: 11
Views: 225

Re: Grinding wheel hole enlargement ?

Mine is a 1/4" diameter pin about 2 1/2" long and has about an inch of it's length coated with diamond grit. If my memory is working, the wheels I used were purchased as blanks and were 2" diameter and 2" long with a 1/2" bore. Probably from Diamond Industrial Tool as they have an incredible stock o...
by GlennW
Sun May 20, 2018 3:46 pm
Forum: General Discussion
Topic: Grinding wheel hole enlargement ?
Replies: 11
Views: 225

Re: Grinding wheel hole enlargement ?

They blew up from having the ID enlarged?

So dressing the OD with a diamond will cause the wheel to explode as well?
by GlennW
Sat May 19, 2018 9:36 pm
Forum: General Discussion
Topic: Grinding wheel hole enlargement ?
Replies: 11
Views: 225

Re: Grinding wheel hole enlargement ?

I'ts not uncommon to alter wheels. I have an ID spindle for my OD grinder and couldn't find small wheels to fit. The wheel supplier recommended what "10KPete" did above, and stated that's how it's done, so that's what I do. I do them on the OD grinder with the wheel held in a chuck and a diamond bur...
by GlennW
Wed May 16, 2018 8:37 pm
Forum: Lathes
Topic: Carbide question
Replies: 7
Views: 282

Re: Carbide question

More common on turning tools, especially negative rake tooling, (which is what the OP is referring to) than on milling cutters.
by GlennW
Wed May 16, 2018 9:20 am
Forum: Lathes
Topic: Carbide question
Replies: 7
Views: 282

Re: Carbide question

It's a carbide seat that lends support to the insert and protects the tool holder from damage if the insert breaks under heavy load.
by GlennW
Tue May 08, 2018 4:45 pm
Forum: The Junk Drawer
Topic: I Hate Coyotes
Replies: 76
Views: 2816

Re: I Hate Coyotes

They'd never suspect anything...
Squirrel Boy.jpg
by GlennW
Tue May 08, 2018 12:52 pm
Forum: General Discussion
Topic: Single point threading
Replies: 15
Views: 778

Re: Single point threading

It doesn't need to be exactly 29.5 or exactly anything. It just needs to be slightly less than the half angle of the thread profile. The threading tool geometry is what dictates the thread profile. The object of the game is to have the leading edge of the threading tool do nearly all of the cutting ...
by GlennW
Sun May 06, 2018 4:44 pm
Forum: General Discussion
Topic: My greatest Shop Photo
Replies: 10
Views: 635

Re: My greatest Shop Photo

How did you make the lathe disappear?
by GlennW
Sat May 05, 2018 4:39 pm
Forum: General Discussion
Topic: How do I make this?
Replies: 15
Views: 616

Re: How do I make this?

The drawing is too small to make any sense out of for old guys like me!
by GlennW
Thu May 03, 2018 10:20 am
Forum: General Discussion
Topic: Single point threading
Replies: 15
Views: 778

Re: Single point threading

If you are advancing with the cross slide it really makes no difference where the compound slide is set, as long as it is locked down. If advancing with the compound slide the slide needs to be set slightly less than the half angle of the thread being cut, so for a 60 degree thread, around 29 degree...
by GlennW
Tue May 01, 2018 12:30 pm
Forum: General Discussion
Topic: Machining Setup's with Few Comments
Replies: 43
Views: 5241

Re: Machining Setup's with Few Comments

That's a really nice indicator clamp you made, as well as your Quarn!

That looks like an interesting grinder.
by GlennW
Sun Apr 29, 2018 5:59 am
Forum: General Discussion
Topic: Machining Setup's with Few Comments
Replies: 43
Views: 5241

Re: Machining Setup's with Few Comments

I also use the term "end gashing" (but with me and with what I do; that is a 4th and quite different optional operation to what is shown on your diagram). The "Gash" is what creates and dictates the "Axial Rake Angle". Now I understand what you are doing, as I couldn't understand what "third facet"...