SAND AND FAIR THE EPOXY.

It's a pretty thankless task, but getting rid of all the lumps and bumps in the epoxy coating is the key to a quick easy finish. We use a Random Orbital Sander (ROS) and 120 grit, paying particular attention to the taped joints and areas where filler has been applied.

Note that by the time the sanding has been completed there's very little filler thickness left. Be careful to keep things nice and fair. It's best to hand sand using a long board, over seams and places where the sander is likely to follow the bumps to ensure that you don't make more bumps.