Scarfing the plywood sheets

Next I had to build the frames.

The sheets were aligned and glued with waxed paper between the sheets so that the panels would not stick to each other. The sheets were prevented from moving by using brads nailed to the 3/4 inch plywood base

I built a jig to hold the sheets in alignment while they were being glued together. This jig became the base for the frames later. It was 16ft long by 3ft wide.

After that I used a random orbit sander with 80 grit paper to provide a good bonding surface.

The sheets were planed with a power planer to get most of the edges off and then smoothed with a jointing planer to get things flat.

Scarfing the sheets of plywood. The 8x4 sheets were cut in half lengthwise to make them easier to handle once they were scarfed. They will be about 16ft by 2ft once scarfed. The sheets were place on an old door with a ply side screwed to it to align the sheets. They were placed with their edges two inches back from each other to give the correct angle of the scarf.