i have a gas fired torch and old soldering irons. ihave never used them, just mostly for antique value. most leadding i've done has been to build a framework, mostly like a metal screen, and work bars of lead into a semi-molten state and begin to apply the lead to the framework. i use a #1 tip on the torch. as with the body solder, it requires patience, and practice to make work right. you actually melt each strip together with the torch until you have the basic shape you want. working the lead requires much the same tools as working plastic body filler. i like the feel of lead as it's being worked. i also like the shiney result as the metal blends into the lead.

the down side is, it's lead. my clothes get washed separate, and the shop would be swept again and again, until i was comfortable all the lead was gone. then came washing the floor.

my grandchildren play in that garage on rainy days. i take lead in the enviornment, my grandchildren, and your children quite seriously.
the lead left over goes to the recycle joint.

leadding is a lost art. one of many in the auto industry. the body solder replacement is an excellant alternative, and i highly recommend you learn how to do it. the result will serve you well for years to come. (with PROPER PREPARATION)