Brazing copper for HVAC?

[Xringer]

Originally Posted by S-F

FWIW I have the small kit from Home Depot. I got it for doing exhaust work on the car. For cutting. I would be very careful with oxygen and mapp since it cuts a steel exhaust pipe pretty easily. I imagine it would make pretty short work of a copper tube.

I saw some melting points of different metals, and you are right about steel vs. copper.

Melting temperatures of metals

But, cast iron is pretty close to copper..


Maybe a heating tip, instead of a cutting or welding tip will work for heating
copper enough to draw in a filler alloy..