For all the galooti MFia, it's still a work in progress bu I thought I would
show you some of the progress to date. Thanks for all the data and comments.
It wasn't just useful, but incredibly useful!

 

https://www.flickr.com/photos/183694571@N.../49747492253/in/dateposted-public
/

 

The bolts holding it in place  are indeed *10-30 bolls. . 

 

WARNING: some tailed appurtenances were used in the following comments, but
it was in aid of repairing a hand tool. 

 

The photo shows the inside of the plate, the outside doesn't look quite like
that  pretty yet.

 

The pins were turned down on a unimat to get a shoulder (4.5mm) a hole
drilled, and the outside hole  tapered with a hand reamer.  Inside sanded,
then buffed with a deburring wheel on the inside. Pins inserted-then
(hand)peened over-a-la- dovetails on infill planes. That, in blacksmith
parlance, "upset" them, so there was a little hand filing to do for trial
fit. Unfortunately, my hole placement was off by 0.30 mm, but much as I
hated to do it, simply bored out the existing holes from 15/64 to1/4 and it
fit smoothly

 

Still to be done is fabricate the 10-30 bolts..die is on the way. Once
that's done, then lock the plate in place and fit and fettle the plate to
fit the body on the outside

 

Learned something new to me along the way..Hex dies are intended for
re-threading or repairing threads, and round dies are intended for cutting
virgin threads. Could be internet BS or shop mythology-who knows. Another
rabbit hole to persue.

 

Offered for your interest

 

Eric

Eric wrote:

> Learned something new to me along the way..Hex dies are intended for
> re-threading or repairing threads, and round dies are intended for cutting
> virgin threads. Could be internet BS or shop mythology-who knows.


Sort of. But it is a safe way to go when buying sight unseen, and it can be
tough to tell when you are holding the die in hand. Round dies are almost
exclusively for cutting threads. Hex dies go both ways. Some of the suppliers I
use don't stock hex thread cutting at all, so a hex from them will be for
repair.



Rethreaders seem to be sold as thread cutting fairly often by less reputable
sources, including box stores, to the point that I have several times received
thread repair dies when purchasing what were supposed to be thread cutting dies.
Many people don't realize there is a difference.


There are several reputable lines of hex thread-cutting dies, but if buying a
hex die, you need to be sure that your supplier is reputable.


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Very nice- now start actually uing tht plane!

Ed MInch

> Eric Coyle  wrote: "my hole placement was off by 0.30 mm…”

Eric,  I don’t know if you got my photos but nothing on that side plate is
within 0.30 mm.  The nose of the plate is considerably short of the plane body
and when affixed there’s a gap at the back between the bottom of the plate and
the sole.  You are well on the way to a better-than-original repro.

Kevin

OK, I'll bite.  What is the difference between rethread and initial
threading?
Bruce Z.
Des Moines, IA
Who is always willing to learn something new.......

On Wed, Apr 8, 2020 at 5:26 AM Erik Levin via OldTools <
oldtools@s...> wrote:

Bruce,

On an initial threading, you want to CUT metal.  You want to see chips fall out.

On a re-thread, you want to DISPLACE metal, essentially by bending it back to
where it belongs on the ridges.  You really don’t want to see chips, although
there will likely be a few.

John Ruth
“Of threads, and threading systems, there is no end!”