I'm painting my exterior entrance door. It's metal. I'll probably finish
it in a latex semi-gloss, but my consider a gloss finish.
First, it's been horribly painted in the past. How should I prep it? 150
grit on my palm sander?
Secondly, how can I eliminate brush marks? In the past I've used a foam
roller to roll out the brush marks. Does anyone know of another method for
producing a smooth finish coat?
If it was "horribly painted" it is probably latex. Latex won't sand. You
*could* chemically strip then prime. Oil primer. It doesn't sand well
either...best way is wet sanding with silicon carbide paper. #400. Another
choice is auto body primer...it sands well.
Use paint. Real paint (oil) and tip it off. Or spray. Either way, have
the door horizontal.
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<< First, it's been horribly painted in the past. How should I prep it? 150
grit on my palm sander? >>
This is the best case one could make for taking the whole thing down to an auto
body shop and let the experts do it right. The price won't be as bad as you
might imagine, since insurance companies have been aggressively screwing the
shop operators for years on repair labor costs.
There is absolutely no way you will approach the quality finish a good shop can
do. In addition, the automotive finishes will stand far more abuse than paint
store products. Finishes that come close are in the boating industry. HTH
Actually neighbors have a guy staying with them who's painting a bunch.
He's an ex-car guy, so he's been using a little bondo to reduce some of
the internal corners on molding and then spraying it with an airless
brush and some fancy ass nozzle on it.
The result is a car-finish. Totally smooth flowing. Neat look.
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