Painting - sanding dried oil paint to smooth sags?

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jeastith
05-31-08, 04:07 PM
I painted a large, very smooth beam with oil based enamel the other day, and got large sags in the paint. i tried paint thinner, but it is too dry for that to do any good. I'm going to try to sand the sags out once the paint is totally dry, but what should I use? I have no idea how to go about this. Sandpaper? What grit? Should I try to scrape it?

marksr
05-31-08, 04:34 PM
Use a sharp putty knife or a razor blade to remove the sags/runs. You may need to let it dry a little longer after cutting out the sags before sanding. I'd start with 120 grit.

Sometimes it's simplier to apply a thin coat of spackling over the runs [after they're scraped off], sand, prime and repaint.
jeastith
06-01-08, 07:30 AM
thats a good idea - will give it a try. Thanks! I also think i'm going to use spray instead this time. Won't that dry a lot faster than brushed oil paint? This is going to be inside, not outside.

marksr
06-01-08, 11:15 AM
Spraying can be faster but it does require more prep - mainly to contain overspray. Spray cans can be difficult to get a good fluid film of paint with. The paint in a rattle can is highly deluted. It will take a bit of care to prevent dry spots when using spray cans. I can spray real good with conventional or airless spray equipment but I can't always get satisfactory results with a rattle can.