Laminated plywood is a simple construction of plywood boards stacked together to make a strong multilayer board. The board is resistant to weather due to the resin or glue coating in the middle, and it is much harder and tougher than regular plywood boards. Laminated boards are often used in boat construction, such as to make curved boat stems. Laminated boards are also used for decorative purposes, such as to make stylised furniture.
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Things you need
- Odd number of plywood sheets
- Urea-formaldehyde plastic resin powder
- Mixing container
- Paint stirrer
- Paint brush
- C clamps
Stack an odd number of plywood sheets together. Cut each sheet so that it is the same size as all other sheets. Make sure the outside plywood pieces are the same thickness. You can use the same thickness with the centre pieces, or you can use pieces that are slightly thicker. A common arrangement is two 1/4 inch boards for the outside and a 1/2 inch core piece.
Lay the bottom wood piece onto a flat surface if you want the boards to remain flat. Use a curved surface as a base if you want the laminated boards to be curved.
Mix two parts resin powder and one part water in a container mixing until completely smooth and lump-free.
Paint the resin mixture onto the top of the board, laying the resin on thickly and evenly. Place the next board on top of the first board and cover it in the resin mixture as well. Continue the lamination process until you reach the top board. Do not put resin on the top of the top board. Line up the edges of the boards exactly, and use the paintbrush to smooth out any resin that oozes from the seams.
Clamp the boards together using C-clamps. You can use C-clamps to hold both curved and straight shapes. It takes four hours for the resin to dry, so wait at least that long before removing the C-clamps. Ideally, you should leave the clamps in place for 24 hours.
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