At 01:58 PM 3/30/2005 +0000, Paul Grafelman wrote:
>In the process of stripping all the paint from my 77. I am using Aircraft
>Stripper and probably a DA with 80 grit to get the small remaining bits. A
>few questions though:
>
>1. After stripping the paint, I need to neutralize/clean the residue before
>priming. In your experience, what's the best way to do this. The stripper
>says to use mineral spirits, but won't this leave a residue? I've also read
>that you can use soap and water, but this makes me nervous.
Paul,
If the stripper says to use mineral spirits, I think I'd use that. However,
after that, I think I'd was with soap and water. Or I'd at least use
soap and water. Also do a relatively small area, like a fender, then
neutralize it. Don't try to do too big of an area or the stripper can etch
into the metal and you'll have a hell-of-a time trying to get it clean or
to get paint to stick. (Don't ask how I know.)
>2. How long can I safely leave the sheet metal unprotected? It's in the
>garage, no problem with exposure to weather or anything, but I'm worried
>about moisture in the air. I hope to strip/repair/prime within a couple of
>weeks, if it's safe to do so. I've hear of and tried to find Picklex 20, but
>no-one around here has heard of it.
In reality, almost a second! However, after you have neutralized the stripper
with soap and water, try the metal with a towel. Then use something like
Oshpo or DuPont 5017 Metal Conditioner (this is what I use) to etch the metal
and kill any surface rust.
After the metal conditioner, you can leave the metal bare for a day or so,
depending on the humidity and where/how it is stored. If you get surface
rust before you are ready to prime, simply hit the metal again with the
metal conditioner. It's not a bad idea to do that just before you prime
it any way.
Also, most primers are hydroscopic - they absorb moisture from the air. So
don't leave the primed metal too long before topcoating with color. Again
a couple of days in a garage should be no problem. But don't leave the
body out in the rain.
Hope this helps.
John
John T. Blair WA4OHZ email: jblair1948@cox.net
Va. Beach, Va (eBay id: zebra48-1)
Phone: (757) 495-8229
48 TR1800 48 #4 Midget 65 Morgan 4/4 Series V (B1109)
75 Bricklin SV1 (#0887) 77 Spitfire 71 Saab Sonett III
65 Rambler Classic
Morgan: www.team.net/www/morgan
Bricklin: www.bricklin.org
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