Stephen Meschke's practice log

Stephen Meschke#

3-7 balls, 1 minute

Economics of Rotational Molding for Juggling Balls:

Cost of rota-molder: $350 (build/buy)
Cost of raw materials: $0.10 (from recycle bin, + some electricity)
Retail Price per Ball: $3
Break Even: 117 units

Total practice time: 1 minutes

Location: Gym

Comments (4)
7b_wizard - I' don't think, hybrids need necessarily be rotationally molded: with a thick material like silicone, acryl, with high viscosity, it suffices to press them into a form and let it dry.
7b_wizard - I did that - the ball is just too heavy, but it works. Next, one day, I'll cut a big playpit ball in half fill it half, press it round with a smaller diameter ball, then fill it, then join the two halves.
7b_wizard - Costs: near 0 €, but for the time invested.
7b_wizard - ° sry "fill, then filll" = fill a half big playpit ball with silicone paste, then, before joining the halves, fill with loose granular material (millet, plastic beads, conifer needles, whatever).