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Etch Primer #429710
7th Sep 2010 5:23pm
7th Sep 2010 5:23pm
Joined: Jul 2008
Posts: 13,581
Birkenhead
diggingdeeper Offline OP

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diggingdeeper  Offline OP

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Birkenhead
Has anyone used etch primer, I am wondering how real the problem with paint-lift is at the edge of bare-metal and paint?

Is it just a case of try it, if it lifts get the sand-paper out?

Or is it likely to occur and is it best to avoid the edges?

Any other recommends for minor surface rust areas?


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Re: Etch Primer [Re: diggingdeeper] #429711
7th Sep 2010 5:29pm
7th Sep 2010 5:29pm
Joined: Dec 2003
Posts: 5,683
Bebington, Wirral
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DavidB Offline
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DavidB  Offline
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Bebington, Wirral
Etch primer is used on aluminium, etc. Have you tried zinc primer. If you treat any surface rust and spray it over, it'll be fine. I treat surface rust with sandpaper, if it's pitted with an angle grinder (and use knifing putty). smile


"C20 LET bang"
Re: Etch Primer [Re: DavidB] #429712
7th Sep 2010 5:49pm
7th Sep 2010 5:49pm
Joined: Feb 2009
Posts: 1,952
tranmere
chris_gilly Offline

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chris_gilly  Offline

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tranmere
i have etch primer its very runny however it premotes adesion, however its really more for had to stick to areas, carbon fibre plastic etc

id just use a cellulose primer if its for your car removing all rust etc.

Last edited by chris_gilly; 7th Sep 2010 5:50pm.
Re: Etch Primer [Re: chris_gilly] #429713
7th Sep 2010 6:02pm
7th Sep 2010 6:02pm
Joined: Jul 2008
Posts: 13,581
Birkenhead
diggingdeeper Offline OP

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diggingdeeper  Offline OP

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Birkenhead
The advantage of etch-primer is that it chemically changes any remaining rust (only a very thin layer is required), zinc-phosphate primer is just an adhesive unlike the zinc paint we used to be able to get.


Like to sand out as much rust as possible, but there is always a chance of the odd speck re-growing.


The further you are down the pay scale, the more 'essential' you are when the s--- hits the fan... Sue Farbysmith 2020

Insults are engendered from vulgar minds, like toadstools from a dunghill - Charles Caleb Colton

We don't do charity in Germany, We pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn
Re: Etch Primer [Re: diggingdeeper] #462884
17th Jan 2011 5:04pm
17th Jan 2011 5:04pm
Joined: Dec 2003
Posts: 5,683
Bebington, Wirral
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DavidB Offline
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DavidB  Offline
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Bebington, Wirral
I used zinc primer on my subframe after removing all of the rust, it's really 'tacky' in that you can't really brush it and dries in about 2 minutes (even in this weather). I'm spraying over the top either black or white.

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"C20 LET bang"

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