How to Build a Cat Wheel

Cut plywood

• Cut 4- by 8-ft. plywood into two 4- by 4-ft. pieces with a circular saw.
• Find and mark the centers with your tape measure.
• Make a compass out of cardboard to draw circles on 4- by 4-ft. plywood pieces:
  • Cut cardboard into a narrow strip longer than the radius of circle.
  • Attach one end to center of plywood with screw or nail.
  • Measure 21 inches from center, poke a hole for the pencil and draw a 42-in. circle with the compass.
• Cut both plywood pieces into 42-in. circles using a jigsaw or router.
• Adjust the compass radius and draw a 39-in. circle on one piece of plywood, and a 39-in. and 36-in. circle on the other.
• Cut out the 36-in. circle, leaving a 3-in. ring of wood. Set aside the 36-in. circle to use for the base.