Hand Lay Up (Open Molding)
"Hand Lay-Up" is the most widely used molding process because of the cost effective tooling and is able fit almost every application. The tool side will have the finished surface, which can be gel coated or top-coat painted.
Process - Fiberglass mat is cut to pattern requirements, these kits will also have added reinforcements if needed for better rigidity. The laminator saturates the glass with resin and then applies to mold. With brushes and rollers, the operator removes all the air and moves aside till resin cures. Then with high pressure air, the fiberglass part is removed from the mold.