Ospho flash rust

P

pitcuz

Hello, I have restoration project and the body has been sitting for about a year in bare metal with a Ospho coating. I reactivated the Ospho coating using Ospho and a stocthbrite pad, wiped off the Ospho, cleaned the panels down with warm soapy water, wiped dry then used SPI waterborne W&G remover applied and wiped dry. The panels instantly flash rusted, I went ahead and applied SPI epoxy anyway because it was already mixed. My question is should I sand the epoxy off, give the metal some tooth and reapply or continue on? Thanks, Mike
 
I noticed in the post before this one (Summit Racing wash). anotheridiot (member name) says.
I would say if neither is sold as a rust converter or pretreatment you would be ok. Wash and wax remover are implying it is not leaving anything on the steel. Its when you are putting a coating on the steel is where you are going to get blowback from possible failure from the epoxy. You are probably safer if you see flash rust before you spray instead of a coating.

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I hate you take what a guy calls himself an idiot says to heart. The summit stuff was because people are concerned to spray the epoxy over anything but the Ospho since it is what Barry recommends.

From all the lessons here, Shine always would write do not worry about flash rust when so many did. I am just considering that if it did flash rust then you were probably safe with not having any more residue on the metal. The main concern with ospho is not removing all the white dust coating from the metal before you spray the epoxy. If it had the excess ospho on it, I do not believe it would have rusted so quickly.
 
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