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Joined: Jul 2008
Posts: 14,549 Likes: 34
Wiki Master
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OP
Wiki Master
Joined: Jul 2008
Posts: 14,549 Likes: 34 |
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?
There's a real danger that the left will drag Britain back to the 1970s, with secure well-paid jobs, ample housing, properly-funded NHS and social care, free tuition, student grants, final salary pensions, affordable rail fares and fabulous films and music. David Osland 2025 We don't do charity in Germany, we pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn https://ddue.uk
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Joined: Dec 2003
Posts: 5,683
Wiki Guide
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Wiki Guide
Joined: Dec 2003
Posts: 5,683 |
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). 
"C20 LET bang"
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Joined: Feb 2009
Posts: 1,952
Forum Addict
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Forum Addict
Joined: Feb 2009
Posts: 1,952 |
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 6:50pm.
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Joined: Jul 2008
Posts: 14,549 Likes: 34
Wiki Master
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OP
Wiki Master
Joined: Jul 2008
Posts: 14,549 Likes: 34 |
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.
There's a real danger that the left will drag Britain back to the 1970s, with secure well-paid jobs, ample housing, properly-funded NHS and social care, free tuition, student grants, final salary pensions, affordable rail fares and fabulous films and music. David Osland 2025 We don't do charity in Germany, we pay taxes. Charity is a failure of governments' responsibilities - Henning Wehn https://ddue.uk
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Joined: Dec 2003
Posts: 5,683
Wiki Guide
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Wiki Guide
Joined: Dec 2003
Posts: 5,683 |
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. ![[Linked Image]](http://farm6.static.flickr.com/5047/5363655029_c6d69b69ff_b.jpg)
"C20 LET bang"
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