Author Topic: How to make a internal/external threading tool on your lathe  (Read 99744 times)

Offline fatal-exception

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Re: How to make a internal/external threading tool on your lathe
« Reply #25 on: May 04, 2012, 06:39:46 PM »
Quote
Please note the qualifier "I don't need to do production threading."  So long as sharp-corner v-threads are what you need, this will work fine.  However, if your work is subject to inspection to any of the formal standards, you will  be in a world of hurt.  Each pitch has a specific radius at the root/crest (external/internal) thread that is required to qualify under formal standards.

I realize that I am being pedantic here and that most here would not need to meet formal standards, but the caveat is something that should be known -- even by those who have no need of the formal standards compliance in their work.

Thanks Lew. I had no idea that there were standards for the radius at the root and crest. As you say, I don't need to work to standards for the things I build myself, but I will pay attention IF I ever need to make something for NASA.  :lol: Peace!

Offline welafong1

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Re: How to make a internal/external threading tool on your lathe
« Reply #26 on: May 14, 2012, 03:44:10 AM »
dear sir
you say there is a pdf for your post where can i find it?
thank you Richard Westerfield

Offline AdeV

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Re: How to make a internal/external threading tool on your lathe
« Reply #27 on: May 14, 2012, 07:25:19 AM »
dear sir
you say there is a pdf for your post where can i find it?
thank you Richard Westerfield

Richard,

If you look at the bottom of the first post on the thread, there's a link to the PDF there (below the picture of the threaded bar & tool).

HTH

Cheers,
Ade.
Cheers!
Ade.
--
Location: Wallasey, Merseyside. A long way from anywhere.
Or: Zhengzhou, China. An even longer way from anywhere...
Skype: adev73

Offline JohnDK

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Re: How to make a internal/external threading tool on your lathe
« Reply #28 on: June 23, 2012, 05:45:37 AM »
Absolutely Brilliant! Just what I was looking for!
Many thanks
John

Offline terryd15

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Re: How to make a internal/external threading tool on your lathe
« Reply #29 on: October 10, 2012, 02:52:49 AM »
dear sir
you say there is a pdf for your post where can i find it?
thank you Richard Westerfield

Richard,

If you look at the bottom of the first post on the thread, there's a link to the PDF there (below the picture of the threaded bar & tool).

HTH

Cheers,
Ade.

Hi Ade,

I looked for a copy of this pdf but the link appears to have been edited out, is it not possible to download now?

Terry

Offline andyf

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Re: How to make a internal/external threading tool on your lathe
« Reply #30 on: October 10, 2012, 03:10:42 AM »
Well, I can see the link, and have just tried it.

Below Paul's signature, and above the "Last Edit" line, it says:

 BD-LatheTools.pdf (100.96 kB - downloaded 204 times.)
 
I don't think that copy will work as a link. If not, you will have to go back to the first post and try to spot it.

Andy
Sale, Cheshire
I've cut the end off it twice, but it's still too short

Offline mzt

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Re: How to make a internal/external threading tool on your lathe
« Reply #31 on: October 10, 2012, 06:02:54 AM »
Ah!! Got it!
The link to the PDF won't appear unless You've logged in to the forum.

Marcello

Online RotarySMP

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Re: How to make a internal/external threading tool on your lathe
« Reply #32 on: October 10, 2012, 07:09:23 AM »
Thanks for posting this. Sure looks easier than the internal threading tool I ground out of a normal 8mm HSS-Co Blank.
It would be easy enough to file a tip radius while it is still in the lathe, to ensure the correct root radius for a specific thread if desired.

For the external thread, you could have used the insert tool and jumped from


to this ...




Offline Bishop

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Re: How to make a internal/external threading tool on your lathe
« Reply #33 on: January 09, 2014, 05:05:57 AM »
Thanks Paul, I finally got around to making one of these tools. I can see making a few more sizes very soon, cheers.



Shawn

Offline Meldonmech

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Re: How to make a internal/external threading tool on your lathe
« Reply #34 on: January 09, 2014, 08:40:28 AM »
     
           Well presented pictures and wright up.

                                                                      Cheers David

Offline paulmo101

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Re: How to make a internal/external threading tool on your lathe
« Reply #35 on: January 10, 2014, 10:54:06 AM »
Hi

Big thanks for sharing this will be added to my to do list.
I`m not a single point threading person as I wimp out and tend to buy taps/dies.   I had some info from john, doubleboost, regarding the full form carbides and holder but have not purchased any yet due to wife using funds for non vital stuff such as food etc.  But i do have some silver steel round lying about and this could be my first venture into single point.

Thanks again for great info and pdf
Paul

Offline GUGUSSE

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Re: How to make a internal/external threading tool on your lathe
« Reply #36 on: February 05, 2014, 12:50:50 PM »
Hello,

I read you from France.
Where does one find the link to download the PDF?

Sincerely
GUGUSSE.

Offline Baron

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Re: How to make a internal/external threading tool on your lathe
« Reply #37 on: February 05, 2014, 03:09:41 PM »
Excellent !  Just what I need for a little project.

Thanks:

Best Regards:
                     Baron

Offline aRM

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Re: How to make a internal/external threading tool on your lathe
« Reply #38 on: August 15, 2015, 11:13:43 AM »
Magic !!!
another Superb  practical  idea
Kudos  to U  MAN  !!!
U  da  Dude
Now to adjust  2.5 Degrees on the  compound ( 60-55=5-(2x2.5)  for  our  METRIC  THREADS,  for this  side  of the  Pond
Don't  have  to  pay  couple  Hundred QUID (  NOT  Squid  !!! )  for Branded  Inserts
And  we can  dream on  about  ACME  as  well
This  is  just  fantastic.
MUCHAS  GRACIAS
aRM