You can find good step-by-step directions at bodyresults.com
The basic materials needed are: a ball, plaster of paris, cement, and a shovel...
The mold is made by covering the ball with plaster of paris. After it has dried completely, a hole is cut in the top and the ball is removed.
After filling the mold w. cement, some reinforcing w. more plaster of paris might be a good idea. Give it a week of "curing", then the mold can be chiseled off and the fun begins.
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4 comments:
Great post and superb explanation.
I've been going to make on of these babies for a while.
Cheers
Rob
How much does the stone pictured weigh?
Thanks guys.
As far as the weight on that particular stone, I'm not sure. It was a present for my sister-in-law's garden and I only had one afternoon to play with it after cracking it open. I'm guessing around 200lbs.
A sphere of concrete is is about 150 pounds per cubic foot, or
79 * diameter^3 pounds
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