Before revision: Operation To obtain perfect joins, clean the inside of the fitting and the outside of the copper pipe using coarse steel wool, apply flux paste , then insert the pipe into the fitting and apply heat from a portable propane torch until a ring of solder shows at the edges of the fitting.
After revision: Operation To obtain perfect joins, clean the inside of the fitting and the outside of the copper pipe using coarse steel wool, flux paste is applied, the pipe is inserted into the fitting and heat appliedare cleaned from a portable propane torch until a ring of solder shows at the edges of the fitting.