I don’t know if this is common knowledge but I’ll put it out here. I made some sanding blocks for wet sanding the interior cockpit section of my Mill Creek 13 that have really been working well.
I made the backing plate out of a plastic cutting board. Then I sprayed a heavy coat of 3M adhesive to both the plastic and a common kitchen sponge, put them immediately together. Next do the same for the 400 grit wet sandpaper. For fillets make the backing plate about 3/8” smaller all around to sand the fillets.




