epoxy primers& metal prep BEWARE!
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I have been doing bodywork& paint since 1990. I work in a 3 man shop(we all have day jobs) and i have always coated bare metal with a phosphoric acid & distilled water solution 50-50 and scrubbed the panel with a ss scrubby(no steel wool)it leaves rust. we dont always get to prime right away so the bm panel may sit a day or 2. It doesnt rust!. BUT U MUST REMOVE THIS PA_WATER COATING! I always used Wax& grease remover,then epoxy -prime. Well i guess i missed a few spots and the primer wont feather in those areas which leaves me to believe i must strip the panel and reprime! S*&^KS! So beware! U must clean throughly. MAYBE ILL TRY PICKLEX 20. Thanks for lettin me vent. Mike
why not just put the bare metal in epoxy. wont take any longer than wiping on your concoction and will save you the time of wipin it off
yes that has been a big discussion over the past few years. DO NOT use any type of acid treatment on the bare metal this includes picklex or any other brand. they all leave an invisible film behind that keeps the metal from rusting. the film works like a release agent. your epoxy isn’t bonded to the metal, just the film. ding is right, get each panel or spot to bare metal and coat it in epoxy even if you brush it on 1 area at a time.
TIME is why ! We may strip to bare metal Today not get back to it for a week or 2. Maybe letting it surface rust& just sanding that off with 80 g before epoxy priming would be better.
[b]kustomdog wrote:[/b]
[quote]TIME is why ! We may strip to bare metal Today not get back to it for a week or 2. Maybe letting it surface rust& just sanding that off with 80 g before epoxy priming would be better.[/quote]
you cant tell me that shooting a coat of epoxy over the metal is going to take longer than scrubbing a phosphoric acid coating on the metal. and if time is such an issue shootin a coat of epoxy over the metal will save all that time of trying to strip that coating off when you are ready to work on it again. it will definitely be faster than having to redo the job if it fails due to that coating.
if for some reason you dont want to put it in epoxy while it sits you could always spray a coat of etch on it. that will protect the metal as well. then just give it a quick scuff when you are ready shoot one more light coat of etch on then epoxy. this trucks cowl has been sittin in etch for the last 2 years and no rust has formed
[IMG]http://i288.photobucket.com/albums/ll186/paintbyding/IMG_0404.jpg[/IMG]
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