For the main body:

6 — 2×4 studs,1.15m (or about 45 inches) long

12 — mending plates from scrap plywood (we cut ours into trapezoids to fit the corner)

1 — plywood base about 30 cm wide, 1 m long (about 1 ft x 3 ft)

2″ wood screws and glue

For the throwing arm:

1 — 5/4 x 3 in straight-grain hardwood (such as oak), 2.5 m long

1 — 19mm (3/4 in) dowel rod (as an axle), 30 cm long (about 1 ft)

2 — 19mm dowel rod (to hang counterweights)

2 — mending plates from scrap plywood, about 250mm x 75mm

2 — roller bearing, 19mm inner diameter

1 — rope or paracord, 2m

1 — nail or cup hook

2″ wood screws and glue

Misc:

variety of weight plates up to 7 kg (15 lb)

19mm drill bit (3/4 in Forstner or spade bit)

4 — cotter pins or lynch pins to secure weights and pendulum axle

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