Use a round file to remove the burrs and to open the holes slightly, if necessary, to accommodate
MAKE THREE CIRCULAR WOOD DISCS
Draw three circles of 23" radius on 1/2" thick plywoodmarine quality is best).Drive a nail into
the Plywood at the point which will be the center of each circle. Tie one end of a string to the
nail and the other to a pencil--make sure the length of string between the nail and pencil
measures 23". Keep the string tight and the pencil in a vertical position, and draw an accurate
After drawing the circles, spot check the distance from the center of each circle to the edge in
Cut out the three circles. Smooth the edge of each disc with a wood rasp and/or sandpaper.