Before revision: Operation To obtain perfect joints, the inside of the fitting and the outside of the copper pipe are cleaned using coarse steel wool , flux paste is applied, the pipe is inserted into the fitting and heat applied from a portable propane/MAPP/acetylene gas torch until a ring of solder shows at the edges of the fitting.
After revision: Operation To obtain functional joints, the inside of the fitting and the outside of the copper pipe are cleaned using steel wool or cleaning tape , flux paste is applied, the pipe is inserted into the fitting and heat applied from a portable butane torch or propaneis torch until a ring of solder shows at the edges of the fitting.