Bog is OZ for filler mixed into polyester resin- Hopefully microballoons or (light) or silica gel (heavy) until it can be spread with a squeegee and won't run off. Note: When catalyzed will often go off FASTER than gelcoat.
Gelcoat is polyester resin with less silica gel in it, but with pigment too.
Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
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