Hey folks,
After stripping almost every last bit of sheetmetal on the TR4 and
epoxy primering them, I'm left with only the right front fender and
the two doors to finish.
I sandblasted each panel, then wiped them down with a mild solution of
phosphoric acid, then wiped them down with laquer thinner. I'm using
the phosphoric acid because some areas on the panels were already bare
metal, and I didn't necessarily trust my sandblasting to get tiny rust
specks out of the pitted areas.
This is where my problem comes in. Now that it's August in southern
Michigan, (high humidity) I'm having a flash rust problem. The panels
don't rust after they are sandblasted, but as soon as I'm finished
wiping them down with the acid and then laquer thinner, they turn
orange before my eyes as the thinner dries. I can wipe them down with
the acid solution and all of the rust goes away again, but as soon as
I clean it off with the laquer thinner they rust all over again,
instantly.
Any suggestions? Other chemicals/products I could use for pre-paint
panel prep that will clean off the phosphoric acid? I'm desperate to
get past this point quickly, since I can feel the cold weather just
around the corner. The tub is already painted, and I want to get the
color coats on the outer panels before the weather turns cold. That's
why I don't want to just wait several weeks for the humidity to drop.
I don't have an environmentally controlled area at my disposal,
either, so I have to do this in my garage/driveway.
After seven years of work (don't ask) I can see the light at the end
of the tunnel. If I can get the paint on before the snow flies, I can
assemble the car over the winter and be on the road by spring.
TIA,
Dave Rupert
Dave_Rupert@codl.com
1957 TR3
1967 TR4A
1980 TR7
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