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(More customer reviews)With the prices silver and precious metals through the roof, many crafters are exploring the beauty of less costly metals, including copper and brass. The usual solders for silver or gold don't always work out, though, when handling these metals. Even when the melting points line up, the color of the solder joint can be a problem. People exploring less costly but still beautiful metals should give this hard solder (MP 1310°F) a try. It doesn't cost much compared to silver, but works well with copper based alloys.
This supposedly works without flux on copper pipe (I think a reducing flame will help a lot), but it also works well with the standard borax-based fluxes I've tried, the kind used for silver soldering. (The Amazon description mistakenly says the rods are flux-coated - they aren't.) Color matching with copper is better than other solders, but the filler is on the grey side. It seems a bit dark with brass alloys I've tried, and I'm concerned about color changes as the surface oxidizes. One caution in working with this: these rods are very hard. Don't use your fine wire cutters when cutting pallions. I learned this by damaging a small pair of cutters.
Professionals are said to use this in refrigeration plumbing. I'm sure it will work well, and it's easy to find at many hardware stores. High volume users will probably go to industrial suppliers, though, to find lower prices, alloys with ranges of melting points, and better characterization of the material properties. For low-volume users who can get by with just one melting point, this certainly deserves a try.
-- wiredweird
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Bernz-o-matic 019340/PC3 Phosphorous Copper Soldering RodsBernz-o-matic 019340/PC3 Phosphorous Copper Soldering Rods Features:; Join copper to copper or copper alloy; 40,000 PSI tensile strength; 1450?? F working temperature; Flux coated; 3 rods per card
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