[rub]

Greg, you might of heard of these guys, they do a lot of posting, and probably the most experienced in this that I'm familiar with.

sevt chevelle, no gap, otherwise the metal sucks in and you get more warpage.

baddbob71, no gap, less shrinkage and warpage.

martinsr, tight fit, clean metal on both sides.

I guess as long as there close to tight, so you can still align them, but keeping a tight fit might be another story, I will keep them fairly close, but it will take me a while to weld them.

Sometimes I will get a bucket of water and a bath towel, wring it out so its just dripping a little, let the spot welds cool a little, then go over the panel with the towel in about a two foot area, cool all the metal down.

I never let things get to warm, I guess patience is the key to warped panels.

Anyway, I'm not real sure on any of this, but interesting question.

Rob