[TheForge] Nuts

Fri Dec 12 07:07:00 2003

        Any machinist in the crowd?  When thread taps are made they are
offered in range from H1 - H7...........H1 being a very tight fit, and H7
being the most loose.   When you buy taps and dies for general maintanance
they are usually sold as H4's.
        Are Acme threads for machine tools cut to tighter tolerances than
those for a vice that would allow it not to bind?  Maybe some info on that
could offer better results in your trial and error projects for clamping
accessories.

Ralph Sproul - Bear Hill Blacksmith
Webster, NH


----- Original Message -----
From: "Dave Brown" <[email protected]>
To: <[email protected]>
Sent: Thursday, December 11, 2003 10:47 AM
Subject: Re: [TheForge] Nuts


> At 09:02 12/11/03, you wrote:
> >Somewhere I heard that Acme threads seize up to make breaking loose a
vise
> >difficult.
> >i.e.  vise was not a good application. Anyone have experience w/  that?
> >
> >dan tull
>
> Dan,
>
> Looking at the bench vices in my shop (quite a few of them), they all seem
> to have ACME threaded shafts.
>
> Dave Brown
> Heritage Smithing
> Green Bay, WI
>
>
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