cabinet painting

[Charles W. Morehouse]

Hi Chuck,
Where can you get Zinc Chromate?  I thought that the environment police 
had banned it.
Wayne,
W4GBW also Fl.

Chuck W4MIL wrote:

> Hi Mike.......
>
> A couple of thoughts here.  I had a BUD aluminum box that I wanted to 
> paint before housing a homebrew amplifier.  I prepared the bare 
> aluminum by cleaning it with 0000 steel wool, wiping with a soft 
> cotton rag (being careful not to get fingerprints and oil on the 
> surface) and then priming with aircraft frame grade Zinc Chromate.  
> The green looking stuff. Afterward, the paint went on nicely, no 
> fish-eyes or runs.
>
> Almost always, I use the Zinc Chromate when painting aluminum.
>
> In the case of steel cabinets and panels, I've found that after 
> sanding, bead blasting or whatever is used to prepare the metal, a 
> good washing with TSP (Tri-Sodium Phosphate) and rinsing with 
> distilled water is necessary.  After drying (the Florida sun makes 
> quick work of that process) I shoot with automotive primer.  BTW, I'm 
> unsure if TSP in it's original form is still available today, but 
> there is a substitute under the same name.  ACE hardware carries it 
> locally.
>
> YMMV.  Hope this is helpful.
>
> 73 de W4MIL
> Chuck
>
> -----Original Message-----
> From: mkx at SYMPATICO.CA
> To: HEATH at LISTSERV.TEMPE.GOV
> Sent: Sun, 7 Jan 2007 4:46 PM
> Subject: [HEATH-TEMPE] cabinet painting
>
>  Hi, Im starting to get frustrated painting an aluminum radio cabinet.
>  Here's the problem. I sanded the old paint surface down... I primed 
> it, light grey primer.... Then I paint it with Tremclad semi-gloss 
> paint. _The primer went on great, a perfect paint job._ Every time I 
> try painting on the final colour, it goes fish-eyed (bubbles on the 
> surface of the metal) I later sanded the surface, prime then 
> paint..prime goes on perfect...same thing. I even used rubbing alcohol 
> to clean the surface before painting.... same thing - fish eyed.
>
> Any thoughts??
>
> 73 Mike
>

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