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Phun is a 2d physics “sandbox” program that look like it would be great for teaching and for creating quick mock-ups of kenetic sculptures. I’d have tried it out and given a full report if there was a version for the mac. Check out this video of Phun in action. […]

From the Steam Engine Library: THE PNEUMATICS OF HERO OF ALEXANDRIA FROM THE ORIGINAL GREEK

Patina formulas for Brass, Bronze and Copper

Great Threading Chart

This to That