Originally Posted by
dchsueh
How about using a product that removes rust via chelation instead of acid?
http://shieldtechnology.co.uk/rustremoval.html
(I have no experience with this product; a local retailer started selling this product which is how I know about it.)
Check the cost on it. Do the math on a 60 gallon bath of it, that's about the size of my frame bath. Lets see, one 500ml bottle for $40 US dilutes to two gallons. So I would need 30 bottles for a bath, $1200 worth. Right now, I use about $2 worth of oxalic to make a bath.
Did a little google search on this stuff, some report it to be very similar to using molasses, but paying a huge premium for it. There are a lot of people out there hawking this stuff.
Even if I could just use one bottle somehow, at the $40 price point, I would not bother doing most of the rust treatment I currently do. Just not cost effective.
MSDS on this stuff is straight from infomercial land. Pretty funny stuff.