[TheForge] bolt thread repair tool

[Bruce .]

There's an article on our website about rebuilding a leg vise, including
the box with brazed-in threads:
http://njba.abana-chapter.com/  click on "Tim Suter's leg vise rebuilding
<http://njba.abana-chapter.com/timvise.htm>" at the left.

Bruce
NJ

On Mon, Feb 23, 2015 at 8:41 PM, Peter Fels & Phoebe Palmer <
artgawk at thegrid.net> wrote:

> I’ve faked acme style square threads by eyeball and hand ( chisel, hacksaw
> and files) and the product was really crude. It sorta worked but nothing to
> be proud of. Someone with a better eye and hand could have done lots better.
>
> On Feb 23, 2015, at 4:32 PM, jerry Frost <akfrosty at mtaonline.net> wrote:
>
> That's true Pete, it wasn't till after the Civil War standardization
> started
> becoming the norm. well . . . IIRC. I can see it now, a treadle lathe and
> hand feeding the cutter using a tracer or similar. Heck if the lathe had a
> feed screw it could've been hand made too.
>
> It's starting to sound like doing the repair like one of the older books.
> Wrap the screw with sq stock that's been forged to fit in the relief. Then
> wrap this piece around a turned bar and forge braze the two together.
>
> Hand filing is apprentice work. for 1/4" width cut a strip of paper, hide,
> etc. 1/4" wide and wrap it helically around the shaft and scribe in the
> gap.
> Then using dividers scribe the width and put the apprentice to work.
>
> Dies aren't terribly difficult to make by hand but I don't know about a
> feed
> screw die. I'm thinking the bits would have to advance incrementally or a
> person would have to have a heck of a piece of machinery to turn it. Taps
> would be similar though a LOT easier to make.
>
> Hmmmm.
>
> Oh, this is a seasonal thing I've been doing for a while now. Usually we're
> still getting single digit or sub zero lows and everybody is Jonesing for
> spring and after getting a little friendly grief about being Frosty at work
> one day I changed my handle to Toasty. It's a little wish for an early
> breakup, not that it's necessary here this winter but seeing as how the
> lower 48 is getting a winter butt kicking I'm making the change for you
> guys.
>
> Toasty
> -----Original Message-----
> From: TheForge [mailto:theforge-bounces at mailman.qth.net] On Behalf Of
> Peter
> Fels & Phoebe Palmer
> Sent: Monday, February 23, 2015 12:09 PM
> To: Blacksmithing List Sponsored by ABANA
> Subject: Re: [TheForge] bolt thread repair tool
>
> Jerry, on the couple of screwed up  post vise vice pivot bolts i've
> rescued,
> they were neither standard thread nor diameter.
> I'm a guy who picks up bolts and nuts where ever i saw them abandoned for
> around 50 years, and my misc bolt collection is pretty extensive, but after
> hours of rooting around in my boxes, buckets and bins.no matches.
> Gotta suspect they made their own thread taps and dies pretty commonly back
> then.
> Somewhere in my collection are some very crude, hand made thread dies.
>
>
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