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[sparkey]

  Hi guy's, many moons ago I was given a shoe box with many types of solder,flux and bibs and bobs,over the years I have used all the silver solder and as the gent who gave me it is no longer with us,I was wonder what type for railings and pipe work,looking on sites I see there are many types available, perhaps you steam guys can recommend one for general use and where to buy it, many thanks for any replies  Ray.      

[david48]

Try this site every thing you need to know ,www.cupalloys.co.uk.  I use the paste in the syringe not cheap ,with a pencil torch.
David ,still building Fairmount Alpine.

[Brian60]

David is the paste in the syringe a mix of the solder and flux or does flux still have to be used? As I only have about 2 inches of a rod left  using a paste for the amounts I need would be far easier than dabbing the rod or snipping bits off it.

[david48]

The paste is a mix flux and solder.
David.

[essex2visuvesi]

is this the stuff you mean?
http://www.ebay.co.uk/itm/Silver-Solder-Paste-for-jewellery-making-Silver-Solder-X-easy-Easy-Medium-Hard-/321406835183?pt=UK_Crafts_JewelleryMaking_GL&var=510281780009&hash=item4ad55719ef

[david48]

Maby ,difficult to say as I said Ibought it from Cupalloy and the description was different .
David

[hammer]

With silver solder so expensive I use an alterative, ROTHENBERGER- ROLOT S2.  More of a brazing rod than a solder, needs no flux on copper to copper will join dissimilar metals with tenacity or silverflow 55 flux. Slightly higher melting point than silver solder only 10 to 20 degrees. Plastic at lower temp & runny at high, this means it can be built up, also useful on two stage jobs. BUT THE BEST OF ALL IT CAN COST AS LITTLE AS £0.70 for a 60+3+3mm stick. My son but me on to it he is a refrigeration  engineer and has to  fix joints to withstand 300psi, so it is good. 

[steamboatmodel]

With silver solder so expensive I use an alterative, ROTHENBERGER- ROLOT S2.  More of a brazing rod than a solder, needs no flux on copper to copper will join dissimilar metals with tenacity or silverflow 55 flux. Slightly higher melting point than silver solder only 10 to 20 degrees. Plastic at lower temp & runny at high, this means it can be built up, also useful on two stage jobs. BUT THE BEST OF ALL IT CAN COST AS LITTLE AS £0.70 for a 60+3+3mm stick. My son but me on to it he is a refrigeration  engineer and has to  fix joints to withstand 300psi, so it is good.

You have to be care full what you use as a substitute for silver solder. I thought I had found a Bloor one and then found out that exposure to the products of combustion weakened the joints.
Regards,
Gerald