Think This Could Be Brazed?

[Dr. Frankenstein]

I have this old Puch 250 SGS I want to rebuild, but I'm finding the oem gas tanks are a bit pricey - think this could be brazed?
DSCN2428 by Dr. Frankenstein1, on Flickr

DSCN2429 by Dr. Frankenstein1, on Flickr

The rest of it's in pretty good shape, structure-wise.

[CYBORG]

I would guess the metal is pretty weak in other places. You could use it for a mold, and make one out of fiberglass. Also not cheap.

[gregforesi]

Anything can be fixed. The question is "Should it?".

I worked in a machine shop as a kid. The old man who owned the property had maybe 2500 old cars sitting in a field. He had a full time crew for restorations. He even had a couple of steam engines on a siding.

This pile of rust gets delivered. Wood spoke wheels in the back seat, nothing above the top of the doors...things like that. Your basic piece of junk.
So I said "Hey Mr. Pollard, what are you going to do with that?"
"Well kid, that's a 1906 Rolls Royce Silver Ghost. I paid $1000 for it. All I really need is the radiator and we can make everything else and still call it original."

And he did. And it was.

Another tidbit...There wasn't a single Ford on the entire lot. Mr. Pollard (who invented calcium chloride for keeping dust down on dirt roads) had an argument with Henry Ford the 1st and refused to have anything to do with Fords.

[5speed]

any good fabricator could make a patch for that and the other bad spots. but by the time you pay him then body work it and paint it..the price might be close to a good used one.
then there is the condition of the inside of the tank..

[low-side]

That tank looks like it's half cancer. Probably end up brazing patches on both sides of the rear and soldering several dozen pinholes in the floor. I'd personally prefer a clean one, even if it cost $250 - $300.