have a question regarding soldering coper pipe type M. anyhow, i've began a small project that ended up being a monstrosity. i soldered some pipe, i cleaned the pipe with sandpaper/steel wool, put on the flux and applied the solder. here is what i did. i put solder on the pipes before joing the couplers. actually put solder on the coupler and the pipe then i heated them both up and applied a bit more solder. is this a good way to do it. or should clean, apply the flux, join the coupler and pipe, then heat and solder??? I know the method i used works on circuit boards, would this also be good on copper pipes?? thanks, ARQ.