Basic level prep for handpainting a surfboard

Newbie here, I saved a Greg Loehr shaped Aquaman board from being dumped in a landfill, fins are intact, no serious damage, lots of sun fade - and I have two questions: 1) I’m a artist that usually paints on large canvases, and I’m tempted to hand paint scores of colorful piranhas all around Aquaman and sell as a wall hanger, what is the most effective seal for under acrylic paint (once I sand the oxidization off), 2) should I instead to see if someone wants to preserve this? I doubt it’s rare. Thanks in advance.

Send it! Looks pre-sanded a bit which will help the acrylic stick. Lay on a light hot coat of resin for a nice finish and it’ll be a solid piece.

recommendation on resin brand? This the first of a few I’ll handpaint, don’t want to mess up on the basics (like buying cheap resin)

Solid option. make it a thin coat to seal it and it’ll hold. measure twice sauce once. good luck

Welcome to the forum Rick and Quinn.

Wondering if the board has epoxy resin being from Greg Loehr…

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Would that make a great difference? I’m starting on sanding this sunday.

A sanded board should be an OK starting point, epoxy or polyester. I would be a little concerned about the art paint reacting with whatever material is used to clear coat it, so it doesn’t crinkle or melt from any solvents in the clear. If the board was to be surfed I would be also concerned that the clear coat has really good adhesion to the old board. Some folks like poly over epoxy for a gloss coat, some prefer 2-part clears, some like concrete sealer. Test panels are a good idea as well. Sometimes people have issues when the artwork does not have enough time to dry before the next layer is applied.