ME Vol 153 No 3735 Article by "Tubal Cain" on making a die

Apr 13, 2006 4 Replies
A

I've been trying to track down this article:



"Making a special die" by Tubal Cain in ME Vol 153 No 3735 pp214 (reference found on the index on the web)



since it coincides with what I'm trying to do -- make a special die; in my case for 0.275" x 40tpi thread for a Lorch 8mm watchmakers' lathe collet. I have seen the article before when reading through MEs in a club library and remember some handy tips on hardening without distorting the die.



However it neatly coincides with a gap in my model engineer stocks (mostly volume prior to vol 150 and after vol 156!). I'd be happy to pay copying costs if anyone has the article (or indeed a scan of it).



Alternatively I've got a box of duplicates for MEs covering volumes around 140-150 which might contain one which I could send in exchange!



Alan Bain


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J

Alan, If you can wait until tonight I'll scan and post the link.

-- Regards,

John Stevenson Nottingham, England.

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C

Playing devil's advocate, why bother? Why not screw cut the threads you want? The accuracy should be greater, and that would be quite important with a little collet.

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A

It would (and I've done them this was when I lived near Cambridge and could use the screw cutting lathe belonging to the Cambridge MES) but I don't have a screwcutting lathe! My lathe is a Lorch-Schmidt of pre

1920s vintage -- round leather belt drive taking 12.5mm collets!

I do have access to a tap set for 0.275"x 40tpi and I think this was the position of the author of the ME article (from what I remember he inherited some really bizare set of taps and while he had no need to use them, felt he should have matching dies). My main use for such a die would be cleaning up existing threads on collets.

Alan

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J

Alan, Emailed you the file earlier. Have you received it ?

-- Regards,

John Stevenson Nottingham, England.

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