Process of Design and Construction

2X4 Wood acquired for building

Lacrosse mesh (soon to be transformed into a sling)

Metal Rod

Base being built

Base built (with wood underneath to hold weight)

Base arms being added

First swinging arm being built

Metal rod being attached to support swinging arm

Weights added, Batman I ready to go

R.I.P. Batman I

ditch the first lacrosse head, take the second lacrosse head (pictured at top) and use its mesh for sling mechanism.

Sling

re-use first swinging arm, attach sling to end

testing weight hold and modifying sling mechanism

reinforcers added

One last sling modifier

(after spray paint dried) trigger installed at base of catapult