The Bar, Throwing Arm, and Counterweights

My father had a metal rod which came from some car part. He cut it up and we made large holes on the side for it to go through.

Jessica drilling the holes into the side of the catapult for the bar.

Jessica inserting the bar into the catapult.

After the holes for the bar were made, we created a throwing arm. The throwing arm measures to be 40 inches long.

Yadi added on the counterweights, which were twenty pounds total. The counterweights were spare weights we found in Jessica's garage.