The best thing to happen to me when it comes to soldering is how to use a soldering iron. For round barrels, I make my
own underlugs out of about .030 thick steel or brass. Cut a piece about 3/4" long by 1/2" wide. Fold in the middle and
pound the bend flat. I then place the bent area into a machinists vise, about 1/8", and fold the two upright leaves open,
pound them flat. Then raise the edges of those two flats until it matches the round part of the barrel......it requires a
little finessing here. Using emery paper, clean up the inside curvature of the lug, apply soldering flux, then come the
easy part. Using that soldering iron, get it hot with a propane torch until solder melts on it, then using the iron, hold it
on the underlug where the flux is, the iron will provide the heat and you will amazingly tin the underise of the lug. Then
to attach it to the barrel, you should have one of my little clamps to hold it down and apply pressure downward. The
barrel should be cleaned with emery paper where you want the underlug and should be fluxed. Hold the lug in place
and apply heat to the barrel until the solder flows........stop, you are done.....simple............Don
