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I like metal work. Just don't like rust. It is now holding water. Was not able to locate powerful acid flux so I used a toilet bowl cleaner that has hydrochloric acid, it worked great. Even on the steel rivets since I couldn't find all copper. Now to make sure it is sealed, then pickle once...

Back on it today. I see a problem with the drain on the tank, the tank where the drain attaches was concave, meaning it will not drain all water in the tank. I reversed this with a piece of pipe through the fuel gauge port, placing the tank on a layer of sand to cold form a positive sump.There...

Decided to flap wheel the outside of the corroded sections and patch instead of replace, just too much grinding. Found another 5 pinholes. Drilled/ground all the holes back to good metal and TIG welded all shut. Took just 5 minutes of weld time but 2 hours of prep, the standard of rust weld...

Well, looks like metal replacement is the best idea. The bottom and back, up to the long seam weld, will need replacement. I can either grind out the side seam welds, then edge weld to the sides or just do a butt weld. 18 gauge, easily bent for the radiused bottom in either case. I'm going...

Finally got my 002a home and started working on it. First was the fuel tank, once off, I saw the evidence of leaks. Sure enough, a line of pin holes in the bottom at the drain. The drain was concave in, making a trap for water that couldn't be drained.:mad: Oh well, plenty of rust busting...