Copper Wire Solder
This copper wire solder is self-fluxing (it does contain phosphorus). This solder can have a slight grey color, but is a much better match than silver or low karat gold solders. It even patinas like copper!
This wire solder is 1mm thick (18ga). It has a melting point of 1310F (710C) and a flow point of 1460F (793C).
Sold in a 5ft length.
I love this product! I use it with all of my soldering work and it is nice and strong. For light weight projects a butane torch will get it to flow but heavier things need the acetylene torch. Either way the finished pieces look great and are durable.