Step 3Fuel!
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I found that wood works best for me, as most of mine is dry + easy to cut. But, im sure coal will work fine, as will charcoal etc. Experiment, and see what results you get. To make it melt lead, add a piece of metal over the top, on a slant (this is what the extra brick is for XD) and place your lead in the centre of the metal over the fire. This WILL melt the lead, after it has gotten to heat, and it almost certainly will direct flame out one side flamethrower-style (if not with the range).
BE SAFE WITH THIS!