I can silver solder for the most part - but when I was bronze brazing - the bronze
absorbed some iron in the steel - and the alloy turned hard and high temp.
That is when I changed to a 30 gal. Propane and a tall Oxy bottle. That melted
the hard and high temp alloy and continued the job.
Martin
Martin Eastburn
@ home at Lions' Lair with our computer lionslair at consolidated dot net
NRA LOH & Endowment Member
NRA Second Amendment Task Force Charter Founder
IHMSA and NRA Metallic Silhouette maker & member


Gerald Miller wrote:
On Fri, 24 Mar 2006 00:12:02 GMT, (Doug White)
wrote:


To a large measure it depends on the size of the work you wish to do.
For jewellry sized work brazing with fuel-only torch may be OK as
stated by others.......anything larger....model engineering
sized....would require oxy-fuel for satisfactory brazing.

As a point of reference, I had no trouble silver soldering loops of 1/8"
diameter SS rod to the back of a 3" diameter 1/1" thick SS disk with a
standard propane torch. I had it parked on a firebrick, which tends to
reflect the heat back towards the work.

Doug White

Small items, or sheet steel, I have no problem brazing with a turbo
torch, and now that I have two of them,I could probable do larger
items. My favorite though remains silver solder, Several years ago, I
cut the bell ends from 3" bronze/brass toilet flange and 90 deg. elbow
then silver soldered the two together to allow the lower level toilet
to be mounted at floor level rather than on a platform as the previous
homeowner/non handyman had tried to install it.
I have both torches mounted to adapter hoses so the can be fed from
20 pound BBQ tanks so no problem with the disposables freezing.
Gerry :-)}
London, Canada

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