Step 1: Parts & tool list
•bolts(2), washers(2 or 4) & nuts(2)
•hole saw or spade bit that corresponds to the size of the ball
Step 2: Determining measurements
Cut your pieces to be the same size with sufficient amount of area around your ball. You want enough space to put two screws in each end and plenty of area around your sphere to be able to drill into it without compromising the strength of the jig. It will be easier to assemble if the pieces are cut the same size.