Silver solder or braze

This topic has 4 replies, 3 voices, and was last updated 21 July 2011 at 18:18 by Dusty.

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13 July 2011 at 12:59 #71740
Speedy Builder5
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@speedybuilder5
I am making a copper boiler for a 5″ SPEEDY Loco. Plans say braze certain joints, but my gas torch is not quite powerful enough to get SIFBRONZE rods to flow properly on these. What is the considered opinion on using silver solders throughout the boiler construction ?

Also what comment on Reeves 2000 statement that cadmium bearing silver solders must not be used post 31 Dec 2011. Would this apply to non professional users such as Model Engineers ?
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13 July 2011 at 12:59 #5580
Speedy Builder5
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@speedybuilder5
Copper boiler soldering
13 July 2011 at 13:11 #71741
Lordedmond
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@lordedmond
do NOT use sifbronze it will not flow and cause big problems , Please consult your boiler inspector prior to starting work you should use silver solder for all copper boiler work.

but to state again consult your boiler inspector over this matter

see hear for more information on the cad issue

http://www.cupalloys.co.uk/

i am not connected with cup alloys only a customer

Stuart
21 July 2011 at 17:02 #72253
Speedy Builder5
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@speedybuilder5
Strange, as LBSC specifically states SIFBRONZE to be used on several of the joints
21 July 2011 at 18:18 #72257
Dusty
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@dusty
With the greatest of respect LBSC comes out of the Ark. When that was written it was common for brazing/silver soldering to be done with a b****dy great parrafin blowlamp. Silver solder is the way forward. Indeed many Model engineers have silver soldered boilers only using easyflo2. As lordedmond has said speak with your club boiler inspector. Unless you are a skilled welder stay well away from sifbronze. The result will almost certainly be a boiler that leaks like a sieve and will be almost impossible to salvage if you persist with sifbronze.
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Silver solder or braze

Silver solder or braze

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