I use an Oxygen and Mapp gas combo. I solder with "Sil Floss" Brazing rods. It's super strong!! When your done-- its like the metals are fused together-- almost like welding.

These are the brazing rods used on copper refrigerant lines on your A/C in your house.

Works just fine-- and I get the brazing rod for nothing from work--We use it all the time and most guys won't use a rod after it gets shorter than about 6". I collect the short 6" rods and use them for brazing at home.