|Forum topic by Scorpius||posted 372 days ago||1221 views||0 times favorited||8 replies|
372 days ago
I have speakers cabinets made of chipboard and goal is to get black high-gloss finish on them. I know chipboard is awful stuff but these are 20 year old, very famous speakers so I’d like to preserve the cabinets instead of making new ones. They will be painted by professional furniture painters with 2-component paints. I just need to do the preparations. What I’ve done so far:
- sanded chipboard with 180 grit sand paper
I did not sand coats between layers because I was in the impression that shellac will self level. Well it did not. I fact, its very rough “orangeskin” like surface. So I filled all the small holes with water based wood filler. Then I tried to drysand it with 240 grit sand paper. → disaster! Shellac gums sand paper in matter of few strokes.
I’m out of ideas now, what is the best way to continue? Some say use 2-component car filler, others say shellac is fine. I wanted to use shellac since its easier to apply but I cannot sand it. Am I doing some mistake with sanding? I do not want to use wetsanding in any case since it could potentially ruin whole cabinets. Parafine oil in sand paper?
I let it dry 1h before new coat and overnight before sanding.
Thank you very much for advices.