[AT] A long shot--Wisconsin part

[Mike Reggie]

Yes indeed Farmer,  something I have done when brazing very oily or greasy 
cast iron, is to clean as thoroughly as possible, and then pour lacquer 
thinner on the area to be brazed and brush it vigorously with a wire brush 
and rinse again with the lacquer thinner, then light the torch and pass it 
over the area so the remaining thinner that has seeped into the cracks and 
hidden areas will flair up, it seems to pull some of the residual oils out 
of the joint area, depending on how oily the pieces are, I may repeat this a 
few times, and I've found this really helps, then I would flux the parts and 
proceed as usual with the repair.

   Mike


----Original Message Follows----
From: "Indiana Robinson" <robinson at svs.net>
Reply-To: Antique tractor email discussion group 
<at at lists.antique-tractor.com>
To: Antique tractor email discussion group <at at lists.antique-tractor.com>
Subject: Re: [AT] A long shot--Wisconsin part
Date: Fri, 30 Jun 2006 12:09:50 -0400

On 29 Jun 2006 at 23:32, DAVIESW739 at aol.com wrote:

 > In a message dated 6/29/2006 12:16:02 A.M.  Pacific Daylight Time,
 > mrreg_99 at hotmail.com writes:
 > That being said, my  preferred method for the repair of cast iron is 
brazing,
 > be it with brass,  silver, or with cast iron filler, it just seems to 
"work"
 > better. Just  remember, clean, clean, clean, and plenty of quality flux, 
and
 > of course  never forget that brazing is dependent on capillary action, it 
is
 > not a soft  weld.
 >
 > This is just my opinion, I hope it is of some  help   ........ Mike
 >
 > Mike I agree with you on this I have  repaired lots of cast iron and cast
 > steel parts with Brazing or Silver solder.  The later being the strongest 
and
 > used on parts that need the extra stregth.
 >
 > Walt Davies



	One application where it seems to help to braze the parts instead
of stick welding them is when you are working on parts that are fully
soaked in grease or oil. Since you heat the whole part up quite hot it seems
to cook the oil out better and it is maybe easier to spread the weld out 
over a
  wider surface on some parts. Old corn picker sprockets jump to mind...
  ugh! They were often porous crappy cast. Made out of old stoves and
bath tubs I guess.    <(^¿^)>



--
"farmer"

I try to take one day at a time but sometimes several days attack
me at once.   <(^¿^)>

Refurbished Shopsmith's
Good used SPT's
http://www.indiana-robinson.0catch.com/


Francis Robinson
Central Indiana, USA
robinson at svs.net



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