Some years ago I bought a qty of silver solder and flux from Handy and Harman in Rexdale (Toronto) Ontario. They were not especially happy to supply an individual with a small order but they eventually did.

http://www.handyharman.com/joining_materials.php

They now distribute Lucas Milhaupt products.

You could try Handy and Harman and if they don't want to deal directly they may be able to direct you to a local distributor, or you might try calling Lucas Millhaupt directly in the US.

Most suppliers to the refrigeration service trade carry a few grades of silver solder. Wolselely industrial supply (many branches in Ontario) may carry some grades. JD

Matt – I go to the local welding supply store, Air Liquide, and they have it on the shelf, along with the flux.

Last stuff I purchased was Lucas Milaupt, Easy Flo 45, containing Cadmium, (so don't overheat and breathe the fumes in an enclosed area – any soldering of any size is done outside – pic attached)

Where are you located? (even approximately)

John.

Matt

Like John I've always bought mine from the local welding supply company, normally Liquid Air, in Summerside and Charlottown PEI, Winnipeg MB, now in Cambell River on Van.Is., normally off the shelf. I've found that they will order if you want something they don't normally stock. When they did it for me I had to order a minimum quantity. (In my case it was 250 grams of .75mm Easy-Flo 45, as I wanted some fine wire for soldering up boiler fittings). It was expensive but I offered to sell it to the club members in Winnipeg in 1 oz coils at cost and got enough guys interested to make it feasible.

John Purdy