On May 23, 12:35 pm, Jay Chan <[email protected]> wrote:
> I used cans of semi-gloss oil based spray paint to spray the finish
> coat on a book case. The surface was very smooth before I sprayed.
> But the sprayed surface was very rough after spraying. Seem like
> spray paint droplets might have combined together in mid air before
> landing on the surface. I used 400 grit sand paper to easily sand out
> the rough surface. Now the surface is flat instead of semi gloss
> after the sanding. My questions are:
>
> 1. How should I prevent this problem from happening again?
>
> 2. How should I put back the shine on the surface to something like
> semi gloss?
>
> 3. How should I put a protective coating on the "flat" surface to
> allow me to clean the surface easily?
>
> Thanks in advance for any info.
>
> Jay Chan
What is the source of the roughness? Paint fragments or small
wood fibers that popped up from the surface?
You may well have "raised the grain"- caused such small fibers
that remain after sanding to stand proud after getting wet.
Were that so, I'd be sure to use a cabinet scraper (rather than
any sander) prior to sealing and between subsequent coats.
Can easily pass the "baby's bottom" test, doing that, with
construction-grade plywood- utility stuff.
TTFN,
J