[TheForge] Brazed joints

Mon Nov 10 14:15:01 2003

One thing that is often missed about brazed joints is how strong they can
be.  Before getting into blacksmithing I was building bicycle frames using
chrome moly tubing and silver soldered joints.  These were very strong
frames, and used filed lugs at the joints to give full strength.  On some
frames, not one I built, very strong joints were fillet brazed using brass
rod.  With skill and care these are very nice looking joints.  You don't
build these type of bike frames without learning how to file -- how to do a
lot of filing.

Dave Smucker

----- Original Message ----- 
From: "R.C.Mundt" <[email protected]>
To: <[email protected]>
Sent: Monday, November 10, 2003 1:46 PM
Subject: Re: [TheForge] Re: TheForge digest, Vol 4 #742 - 9 msgs

> There is a huge difference between the fine joints you describe where the
> soft or hard solder is pulled into the joint by capillary action, and Joe
> Blow at the construction Co. pilling on brass in a vain attempt to fix
> something.
> Randy Mundt
> ----- Original Message -----
> From: "Thomas A. Troszak" <[email protected]>
> To: <[email protected]>
> Sent: Monday, November 10, 2003 9:06 AM
> Subject: [TheForge] Re: TheForge digest, Vol 4 #742 - 9 msgs
>
>
> > > From: John Emmerling <[email protected]>
> > > Subject: [TheForge] goggles f/brazing question
> > >
> > > Hi
> > > A year or so ago, Dave Brown made a comment thinking  he should be
> > > brazing more in some instances rather than welding. It made me think
> > > along similar lines as I make chandeliers and sconces et al, and there
> > > are times that the cleanliness of brazing supersedes even a tig weld.
> >
> > Absolutely right, and you can go (at least) one step "cleaner".
> >
> > I reconstructed the two chandeliers that now hang in the billiard room
at
> > the Biltmore House here in Asheville. During the restoration, I had a
good
> > opportunity to inspect the "craftsmanship of old" in these impressive
> > pieces.
> >
> > There were many overlapping decorative/structural elements that appeared
> to
> > be "seamlessly" joined, and at first I was truly puzzled and impressed
as
> to
> > how the work could have been done.
> >
> > The answer came when the pieces of the chandelier went into the reverse
> > electrolysis tank. A soon as the paint and rust came off I was rather
> > shocked to see dozens of silvery-gray lines appear around the joints.
> >
> > Upon close inspection, it turns out that the elements were forged
> > individually, then filed to a close fit and soft-soldered together, then
> the
> > resulting joints were finish-filed until all evidence of the joint was
> > invisible under a single coat of paint. Brilliant.
> >
> > I think "Mr. Whatzamatter Cantuweld?" (he was mentioned in a different
> > message) needs a few lessons in "appropriate technology", he may be
> missing
> > out on some good stuff.
> >
> > Tom Troszak
> >
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