How long to leave on vinegar water on aluminum?

[bryanwess2000]

How long should the vinegar and water solution be left on bare aluminum
before priming with zinc chromate primer? Also do I need to redegrease after the vinegar. And do I have to scuff the primer before top coating with epoxy
primer/ paint. I'm using napa 7222 zincrom primer and there aren't much in the way of directions on the can such as dry time or prep for topcoat.

 

[Rickairmedic]

Re: How long to leave on vinegar water on aluminum?

Bryan basically you just wipe it down with the Vin/water solution and once dry go ahead with the Zinc. You dont need to sand the Zinc and dont do a heavy coat of it pretty much just a heavy dusting of the Zinc is all thats needed . I also used the Napa 7222 and havent noticed any issues .


Rick

 

[jpmurphy]

Re: How long to leave on vinegar water on aluminum?

Bryan basically you just wipe it down with the Vin/water solution and once dry go ahead with the Zinc. You dont need to sand the Zinc and dont do a heavy coat of it pretty much just a heavy dusting of the Zinc is all thats needed . I also used the Napa 7222 and havent noticed any issues .


Rick

I concur.....