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OK, I’m back and will try and answer the questions that Buccaneer asked about how I did my tank.
– sheet metal? The common material for fuel tanks was Terrne, that is lead coated steel. Hard to find these days, but I was fortunate to find a few pieces 024 thick, that is what I used for the top and bottom panels. Used much thinner stock, 014 bright (tin) steel for the sides as the thinner stock allowed for easier forming of the required tight “S” bend.
– solder ? I used regular 50/50 lead solder and NoKrode paste flux. If one used galvanized (zinc coated) steel you may need more aggressive acid flux
– soldering tool? A heavy duty electric soldering copper ( not the little gun type for electrical work)
– Forming ? Used matching hardwood ( maple) forms for top and bottom panels to form the 3/16 wide flange. To hand form the “S” shape on the side panel , clamped the stock strip between steel bar and carefully mallet formed the “S” in stages.
– Rivets? soft brass rivets, penned and soldered inside and out.
Assembly? First join the bottom to the sides, next the brass pieces riveted and soldered to the bottom. Finally close the top.
Hope this helps,
Joe B