Search found 1802 matches

by pete
Sun Feb 02, 2020 8:16 pm
Forum: General Discussion
Topic: New in town
Replies: 23
Views: 1623

Re: New in town

A 7"x whatever" wont do what in stainless????? I built a 2" x 12" long stainless cannon barrel on a little Emco compact 5 lathe. Yes that was it's absolute maximum it could do between centers and I had to cheat a bit to even turn that length. And yes it takes awhile, but even a little Shereline 3" s...
by pete
Sun Feb 02, 2020 6:32 pm
Forum: General Discussion
Topic: Creating a GROOVE inside a very small TUBE (on the lathe)...
Replies: 13
Views: 1507

Re: Creating a GROOVE inside a very small TUBE (on the lathe)...

Funny that type of insert was just linked to. I watched a YT video yesterday showing a new to me type of Seco indexable round inserts https://www.youtube.com/watch?v=KbeImfp-7qQ Industry appears to be moving towards that type of indexing and locking method as something fairly new. They probably work...
by pete
Sun Feb 02, 2020 6:17 pm
Forum: General Discussion
Topic: Center Drill Tip Broken Off In Hole
Replies: 34
Views: 2037

Re: Center Drill Tip Broken Off In Hole

I broke a few tips off my center drills and then a few more when I bought a new, larger and seriously misaligned lathe before I figured out how to use them and what was going on with the lathe. Russ is also more than right about about that misalignment problem. But even when correctly aligned you ha...
by pete
Thu Jan 30, 2020 5:46 pm
Forum: General Discussion
Topic: When to ream!
Replies: 11
Views: 894

Re: When to ream!

I haven't machined much aluminum and nothing with as much removed as your doing so I've no real idea how much it moves after machining. I'd guess some with a part shape like that. Do you rough the parts out, let them stabilize out of the chuck for awhile then finish machine? I only found a mention o...
by pete
Thu Jan 30, 2020 2:41 pm
Forum: General Discussion
Topic: When to ream!
Replies: 11
Views: 894

Re: When to ream!

There's a hell of a lot I don't understand about chatter if you delve into the physics and mathematical concepts that model what happens. All of it's way above my understanding.Fortunately we don't really care about all that other than not causing situations where it happens. In a nut shell it's a n...
by pete
Tue Jan 28, 2020 2:55 pm
Forum: General Discussion
Topic: spring loaded tap follower
Replies: 11
Views: 1049

Re: spring loaded tap follower

Only 3-4 simple parts to make and the machines you'll use it on will dictate the maximum lengths and diameters. It also depends on what machines you have available to make and use it on. One male shaft with preferably a hardened 60 degree point sized to a smooth sliding fit for a reamed hole in the ...
by pete
Sat Jan 25, 2020 4:21 pm
Forum: General Discussion
Topic: Auto Collimator.
Replies: 1
Views: 525

Re: Auto Collimator.

Yeah I watched it last night and thought it was a very good video that finally gave a detailed explanation to where I understood how those autocollimators work. That 1/10th of a second there capable of isn't doing too bad. :-) If you read the comments though many seem fixated on the machine moving a...
by pete
Fri Jan 24, 2020 8:44 pm
Forum: Lathes
Topic: Change lead screw to metric?
Replies: 29
Views: 1964

Re: Change lead screw to metric?

No far from a fountain Spro, mostly repeating bits and pieces I've managed to pick up from random places. But thanks for that anyway.
by pete
Fri Jan 24, 2020 6:33 pm
Forum: Lathes
Topic: Change lead screw to metric?
Replies: 29
Views: 1964

Re: Change lead screw to metric?

I can't help with your conversion questions. And my lathes lead screw is 8 tpi so no help there. But how much single point threading do you do, or any real long decent accuracy threads being done? While your current lead screw and half nuts are as you say pretty bad, there overall pitch spacing migh...
by pete
Fri Jan 24, 2020 5:21 pm
Forum: Live Steam
Topic: NJ/NYC/LI Machinery Movers
Replies: 19
Views: 2028

Re: NJ/NYC/LI Machinery Movers

Fwiw, without knowing a persons past experience and ability's I sure as hell wouldn't recommend anyone with zero experience operating equipment, loading, adequate and sensible load securement, transport and safe unloading at the other end to just do it themselves to save some bucks. I've operated eq...
by pete
Thu Jan 23, 2020 7:19 pm
Forum: Lathes
Topic: South Bend 9 Original Way Roughing
Replies: 20
Views: 2725

Re: South Bend 9 Original Way Roughing

Yep as Steve's catalog picture and your lathe shows that scraping was done on the way surfaces at the head stock end and it's safe to assume were also scraped under the head stock as well. There's every reason to do so since that scraping get's done for alignment purposes. Both of Carlos's pictures ...
by pete
Thu Jan 23, 2020 2:16 pm
Forum: General Discussion
Topic: First time using super glue chuck
Replies: 69
Views: 4812

Re: First time using super glue chuck

Plus there's double side tape from a big box store and the same from an industrial supplier. There NOT the same thing. Much more money for the actual industrial rated version, but 3 or more times the holding power. 3M etc have a lot of user information about those products on there web sites. https:...