BTM_FDR Posted November 22, 2016 Report Share Posted November 22, 2016 Hi, I was wondering what is the best to put onto bare metal after doing welding etc, I've used etch primer and Zinc182 in an aerosol, is that stuff hardy enough to take primer and paint on top? Or will it bubble through eventually? thanks Link to comment Share on other sites More sharing options...
caprimk1v4 Posted November 23, 2016 Report Share Posted November 23, 2016 Thing for me is, etch primers are Hygroscopic, they attract moisture out of the air, and this time of year the air is full of moisture, standard primers also are hygroscopic so unless a sealing top coat is applied you are attracting moisture to sit against your new metal. Link to comment Share on other sites More sharing options...
BTM_FDR Posted November 23, 2016 Author Report Share Posted November 23, 2016 Thanks for your input, so what would you use instead then? Link to comment Share on other sites More sharing options...
stephens_xpack Posted November 23, 2016 Report Share Posted November 23, 2016 a lot of decent info here, hope some of it helps. http://www.autobody101.com/forums/viewforum.php?f=5&start=0&sid=133a0f96caf06ffc0500bd7dc4a27fb5 Link to comment Share on other sites More sharing options...
JP. Posted November 24, 2016 Report Share Posted November 24, 2016 Epoxy Primer or Wash Primer is the way to go. Stop using rattle cans. Takes days with these temperatures to dry and not up to the job. HVLP spray guns are dirt cheap these days and only need about 2 - 2½ bar to work properly. Youtube is full of seminars working with HVLP spray guns. Link to comment Share on other sites More sharing options...
BTM_FDR Posted November 26, 2016 Author Report Share Posted November 26, 2016 Okay mate thanks, I'll have to find these bits at the time of priming... I'll have to remove all the stuff on there back to metal again and prime with epoxy? Then fill? Then more primer And paint? Link to comment Share on other sites More sharing options...
JP. Posted November 27, 2016 Report Share Posted November 27, 2016 Well, usually bare metal, then, epoxy or wash primer. bondo, spray filler or spray primer then lacquer. Usually you don't need to prime after spray filler unless you sanded through the filler. New panels come often in a black transport paint. Take a piece of cloth with lacquer thinner, paint thinner and rub it over the transport paint. If it comes off, the whole panel has to be rubbed down to bare metal. If the thinner does nothing to the transport paint, you can leave it as it is. After filler / primer you need to spray the car with lacquer within a week as bondo, fillers and primers are heavy hygroscopic and you don't want moisture under your paint. Epoxy primers are not hygroscopic and can be left alone for ages even in the wet ( Epoxy has a water tight seal ). If you don't want to rub your car down to bare metal, just clean all the rust spots and loose paint. Then cover the whole body in Epoxy primer. Epoxy primer acts as a paint sealer too so you wont get a reaction of the old paint to the new paint. Let it dry for a few days preferred in a warm environment. Lacquer depents on your wishes. Metalic and so on comes as a basecoat and needs to be sealed with clearcoat. Base colour comes as a directgloss, just spray on and done or as a basecoat ( depending on the colour ) that needs to clearcoated to.. Lots of new colours are only available as a basecoat which need clearcoat. The clearcoat acts as a hardener and sealer on a basecoat. 1 Link to comment Share on other sites More sharing options...
BTM_FDR Posted November 27, 2016 Author Report Share Posted November 27, 2016 Amazing info JP Thanks a lot!! Should make life easier Very much appreciated Link to comment Share on other sites More sharing options...
LEONMEX Posted November 28, 2016 Report Share Posted November 28, 2016 I am in the middle of epoxy primer on my Mk1. I have bare metaled the car and it is off to the oven this week. Pros are as stated above it is not like primer and absorbs moisture and the green stuff I am using has a shine to it also so we can see any small dings we may miss with a matt primer finish. I am filling over the top as I have bubble arched the car and or me it will give a better longer lasting finish. Link to comment Share on other sites More sharing options...
BTM_FDR Posted November 28, 2016 Author Report Share Posted November 28, 2016 Nice one Leon... the more info the better Link to comment Share on other sites More sharing options...
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