Rat repair.

[swamp rat]

Originally Posted by Vic1947

I recommend a product called Gem Rust Killer. It's phosphoric acid with some wetting agents and extenders added. I use a spray bottle to apply it until the surface is wet. It converts the rust to iron phosphate and turns it black. If you don't plan to paint the surface, just let it dry. If you plan to paint over it, you can rinse the area with water after all the rust has converted (turned black) and pat it dry with a towel. Then let it air dry completely before painting. It's the same consistency as water, so it easily seeps into the seams. You may need to spritz heavily rusted areas several times and let them soak. If you want to give it a try, you can look it up on the Google. The folks that make it are in Houston, TX and sell direct. Just give them a call.

As far as the welding is concerned, fumes are always a problem. A respirator is the best way to keep out the bad stuff. They can be a pain, but most helmets have enough room to accommodate one. I never weld galvanized without wearing one. Your lungs will appreciate the love later in life.

Hey Vic thanks for the tip! i just got off the phone with Bill the owner and it sounds like he has done his research on a great product, a little pricy with shipping in a special container but it will go a long ways, he does business the old fashioned way, that just does not happen in today's world.

Below is a link to the respirator filters i have, good for acid vapors ect, not sure what kind of gas vapors welding creates or what might be created if i weld over any chemicals like Phosphoric acid ect. Do you think i should be good?

http://solutions.3m.com/wps/portal/3...294936907&rt=d