Quote Originally Posted by 8ninety8 View Post
Was rolling over this morn when the thought pops into mind, if there's leak after welding the whole thing together, and fuel has been introed into tank, then there will be fuel in the gap between the welds, and the torch will light up the fuel!

Sometimes a seemingly great idea, making the tank back superstrong, can lead to unforeseen consequences.

So, just going go ahead with What I first did, make the back with fewer pieces, fewer welds, and no overlapping joints. Will hang this piece on wall as a conversation piece, I think I can pound out the two new pieces fairly soon using what I've learned.

I knew there was reason I never saw a lot of welds on the various tanks seen!
Just yesterday in welding class, a guy welded two plate squares together all around the edges (doubling their thickness), then tried to practice welding beads on the surface.

He'd gotten a good weld on the edge, with no leaks until the wee bit of air trapped between the plates made its own leak with a BANG!