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
