Today I rough cut one of the bottom panels out. I then took the leftover 3/8 piece and scarfed it to another full sheet of 3/8. You can see those on the table at the back of the shop. One the epoxy dries on the scarf, I'll lay it over the other side of the bottom, straight edge on the center line, and trace the bottom of the side panel onto it with a pencil from underneath. Then, I'll cut to the line.