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Primer - basic question

Posted: Fri Apr 30, 2010 6:21 am
by sgray
Hello..

I've been using brush-on red oxide primer for the few small bits of re-painting I've been doing, but I notice that lots of the pictures show grey primer (acid etch?). What's the difference and what should I be using? I'm about to do the glove box surrounds for example, and possibly the latches on the pick-up tailgate.

Simon

Re: Primer - basic question

Posted: Fri Apr 30, 2010 6:52 am
by alex_holden
The grey stuff is likely to be zinc-rich primer. It's a bit more rust-resistant than red oxide.

Re: Primer - basic question

Posted: Fri Apr 30, 2010 7:30 am
by jonathon
Be careful using Rex oxide, as despite the manufacturers claims , few are over paintable, with good results. Go for acid etch , no probs with colour of it ,as it comes yellow ,grey etc.then a high build primer and top coat. :D

Re: Primer - basic question

Posted: Fri Apr 30, 2010 7:34 am
by sgray
jonathon wrote:Be careful using Red oxide, as despite the manufacturers claims , few are over paintable, with good results.
That's interesting.. I have had real problems getting a good coverage of top coat over the red oxide.. thanks

Re: Primer - basic question

Posted: Fri Apr 30, 2010 10:35 am
by jonathon
Shouldn't really paint top coat on red oxide. I'd be tempted to flat it right back, then high build prime it then top coat. Do not use etch on RO paint its bound to react.

Re: Primer - basic question

Posted: Fri Apr 30, 2010 4:39 pm
by bmcecosse
Is the 'red oxide' intended for auto use ??? Sure it's not meant for garden gates!

Re: Primer - basic question

Posted: Fri Apr 30, 2010 5:56 pm
by hotrodder13
i used it on my wheels (but it was red oxide primer) but then went over it with quite a few coats of primer and they look as good as a sprayers job, (flatted every other coat) :D

Re: Primer - basic question

Posted: Fri Apr 30, 2010 6:09 pm
by sgray
That's what I've done wrong - I put the paint straight on top of the red oxide and it's not taken.

Oh well, you live and learn :roll:

Re: Primer - basic question

Posted: Fri Apr 30, 2010 9:18 pm
by hotrodder13
i did try putting paint stright onto it on my wings but it didnt stick properly so i removed and primed over it, :D

Re: Primer - basic question

Posted: Mon Jul 05, 2010 10:46 am
by lippychick
well i am just starting to refurb my wheels and had lots of problems with paint and primers and the reactions they have with each other but i have now found a combination that works really hopefully i will also be lucky with the rest of the painting :0)

Re: Primer - basic question

Posted: Mon Jul 05, 2010 6:01 pm
by sgray
lippychick wrote: but i have now found a combination that works
Is it a secret ?

Re: Primer - basic question

Posted: Mon Jul 05, 2010 6:14 pm
by lippychick
no sorry its not a secret its just zinc 182 with a halfords white acrylic paint which is ok with all types of primers unlike alot of acrylic paint :0)