by mac on Wed Apr 27, 2011 6:47 pm
CMG,
That's exactly right. Your local welding supply will have both. Silver solder is a bit pricey, but it goes a long way. Many industrial silver solders contain cadmium to bring down the melting point. I use a cadmium free solder...they're just as strong, and "better for ya'".
Here's a link to a similar product to the one I use. It's a little lower temperature.
http://www.comfortgurus.com/product_info.php/products_id/9506
McMaster Carr has a bewildering assortment.
http://www.mcmaster.com/#silver-brazing-alloys/=c27b4q
Do not be deceived by the tin/silver solders that you can get at craft stores. Those work at very low temperatures, and are not nearly as strong. There are things that they are good for, but this is not one of them...
Mac