Cut the blanks to size. Cover seven of them with blue painter’s tape, and attach the patterns with spray adhesive. Drill the blade-entry holes and cut the frets in each piece. Carefully remove the patterns and tape, and sand away any fuzzies. Note: Because it’s easier to cut thicker wood, you may wish to stack three or four blanks for each layer and make multiple projects at once.

To assemble the project, align two bricks or thick scraps of wood to form a right angle. Place the cut pieces on the table in front of you in layer order. Spread some wood glue in a disposable paint tray and rub the paint roller in it to form a thin, even layer. Roll glue onto the back of Layer 7 and place it on Layer 8. (Note: Layer 8 is a 7-3/4″ or 19.7cm square solid backing board). Remove any glue squeeze-out, and use the angle guide to adjust the layers until they’re perfectly square. Roll glue onto the back of Layer 6 and add it to the stack, squaring the edges and removing any glue squeeze-out as you go. Glue the remaining layers. Clamp or weight and let dry, and then spray with lacquer.