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Posted by on March 3, 2008, 7:25 am
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> >I cut the thread in the lathe by simply allowing the die to pull the
> >tailstock along the bed, so, as suggested by all 3 of you, I guess
> >that this may have stretched the thread out.
>
> Isn't that asking for trouble and won't it reduce rather than stretch the
> pitch?
> The tailstock die holders I've seen slide along a bar held in the tailstoc=
k.
> So much less force required to drag.
>
> Henry
Henry.
I dashed off my reply too quickly yesterday with brain in neutral.
My tailstock die-holder is the GHT design, which does indeed use a
sliding die holder. The tailstock doesn't move, so there is
negligible drag from that source. However I think the initial part of
the thread may indeed be compressed by virtue of the die having to
self feed using only part engagement.
Mike
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>tailstock along the bed, so, as suggested by all 3 of you, I guess
>that this may have stretched the thread out.