[TheForge] forge brazing

Thu Jul 3 22:34:00 2003

John,

The little forge brazing I've done , I used borax (out of the box) and
copper.  Stripped #10 or #12 romex, or half a copper penny, if you can find
one.  You may have to preheat the 1.25" half round.  Depends on how fast it
heats on top of the 0.25" stock.  The copper flows well into the joint and
is strong.  May have a lower melting temp than the bronze/brass, I've never
tried those in the forge.  I'm not sure, but seems that I had to use a weak
acid solution to get the flux crud off.  Then again... rivets look nice and
don't slide off into the fire as you're frying your eyes waiting for the
copper to flow (and then if flashes green because the penny was really made
of zinc), ha!

Kevin Donahoe
Flying Pig Forge
Morrow, OH
[email protected]

-----Original Message-----
From: [email protected]
[mailto:[email protected]]On Behalf Of John Newman
Sent: Thursday, 03 July, 2003 10:07 PM
To: [email protected]
Subject: Re: [TheForge] forge brazing

The pieces are steel .  I tried useing bronze sawdust (I cut  a silicon
bronze
ingot in half and collected the sawdust) where can you get powdered brass?

John

gblacksmith wrote:

> John:  Are the pieces you are brazing of steel, bronze or brass?  You did
> not specify.  Forge brazing is often done with a material called spelter,
> which is essentially powdered brass.  Recommended flux is pure anhydrous
> borax sprinkled on the pieces after the spelter is applied to the joint.
> avoid having the oxygen-rich gas flame hit the piece directly and place
the
> piece so that he spelter will flow into the joint upon melting.
>
>                                     Grant

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