Hybrid_From_Hell Posted August 23, 2014 Share Posted August 23, 2014 Will shortly be repainting my bonnet. . its down to bare ali Is the tins of halfords self etch any good ? If not where / what to get / use ? Does self etch need a primer coat before colour top coat ? Quote Link to comment Share on other sites More sharing options...
chris200100 Posted August 23, 2014 Share Posted August 23, 2014 Halfords etch primer is good stuff, no need for any other primer just give it a light coat first then a second coat Quote Link to comment Share on other sites More sharing options...
Lewis Posted August 23, 2014 Share Posted August 23, 2014 The halfords stuff seems okay, prior to using that I was buying du Pont etch primer, but at £17 a tin I had to switch to something cheaper Quote Link to comment Share on other sites More sharing options...
JeffR Posted August 23, 2014 Share Posted August 23, 2014 I find that keying the surface (used a wire brush in an electric drill) gave better adhesion with any etch primer, oh and make sure the surface is completely degreased. Quote Link to comment Share on other sites More sharing options...
Eightpot Posted August 23, 2014 Share Posted August 23, 2014 You only need a thin coat of acid etch, just a heavy mist is fine - then you can use a regular primer next. Expensive stuff so no point using it as a primer coat. Don't leave it too long before you add the next coat on top of it, as soon as it's dry spray the next layer or the adhesion between layers losses effectiveness. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 23, 2014 Author Share Posted August 23, 2014 To clean surface pre spraying - brake cleaner OK ? Quote Link to comment Share on other sites More sharing options...
Lewis Posted August 23, 2014 Share Posted August 23, 2014 Yes. DA paint with 320 or 400, bare alu with 180 or 240, taking care to blend the old paint into the bare alu Quote Link to comment Share on other sites More sharing options...
Eightpot Posted August 23, 2014 Share Posted August 23, 2014 I would not use brake cleaner, you dont know whats in it. Just wet and dry the primer, clean with water and clean paper towel or panel wipe and apply top coat. You will probably need to colour sand the surface unless yo have a proper set up with 2k paint anway, so the odd bit of dust aint going to matter. Quote Link to comment Share on other sites More sharing options...
Snagger Posted August 24, 2014 Share Posted August 24, 2014 Brake cleaner leaves a residue, panel wipe is what you should use. I don't rate the Acid-8 etch primer highly. It is a combined etch and high build primer, and consequently doesn't etch well, even if the surface is keyed and meticulously cleaned. Use separate etch and high build primers. Quote Link to comment Share on other sites More sharing options...
Hybrid_From_Hell Posted August 24, 2014 Author Share Posted August 24, 2014 Bit late lol Primered with halfrauds stuff today lol ! Quote Link to comment Share on other sites More sharing options...
GW8IZR Posted August 24, 2014 Share Posted August 24, 2014 Brake cleaner leaves a residue, panel wipe is what you should use. I don't rate the Acid-8 etch primer highly. It is a combined etch and high build primer, and consequently doesn't etch well, even if the surface is keyed and meticulously cleaned. Use separate etch and high build primers. Agree 100% it does neither job well. Dust coat of etch then prime. Quote Link to comment Share on other sites More sharing options...
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.