When a young single adult, some buds and I made a 5' slingshot out of 3" PVC pipe and strands of medical tubing for the sling. We used a large funnel for the projectile pocket and shot water balloons. Our fav acitivity was to launch into distant bleachers and crowds at racetracks. We could have it assembled, loaded, fired, and stowed back in the van before track security arrived. Alcohol may have been involved. Those were the days.

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Bob in Indy