Last week i worked on some resin detail pieces made by Wayne Orr. These all have a gelcoat of metallic finish on them.
After trimming the excess material from the molding process, its time to use painter's tape on the spots that we don't want painted. The inside of the octagon port will take a bit of time to cover up precisely.
With the pieces covered in tape, the next step is to rough up the gel-coated surface. I did some searches on the Internet and most of the sites I looked at suggested 400 grit sandpaper. This roughs up the surface of the gelcoat and gives the paint a surface for adherence.
Next up is the adhesion promoter and R2 Blue