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"Last winter, Thomas Valenty bought a MakerBot - an inexpensive 3-D printer that lets you quickly create plastic objects. His brother had some Imperial Guards from the tabletop game Warhammer, so Valenty decided to design a couple of his own Warhammer-style figurines: a two-legged war mecha and a tank. He tweaked the designs for a week until he was happy. "I put a lot of work into them," he says. Then he posted the files for free downloading on Thingiverse, a site that lets you share instructions for printing 3-D objects. Soon other fans were outputting their own copies. Until the lawyers showed up."

LEGO bricks shouldn't be limited to plastic bins-which is the idea behind Build with Chrome, a collaboration between Chrome and the LEGO Group that brought these colorful bricks to the web using WebGL, a 3D graphics technology. It was originally built by a team in Australia as an experiment, and now we're opening it up to everybody. So now you can publish your wacky creations to any plot of land in the world.

"Every year, my wife and I devote the month of November to convincing our children that, while they sleep, their plastic dinosaur figures come to life. It began modestly enough. The kids woke up to discover that the dinosaurs had gotten into a box of cereal and made a mess on the kitchen table." See also http://goo.gl/eOO8Q6

Plastic Lens Polishing Slurry The Mohs hardness of the resin lens can reach 6-7 after hardening treatment, so we choose alumina as based abrasives to make polishing slurry. Because alumina has a Mohs hardness of up to 9, rapid efficiency can be achieved in the polishing process of resinous optical lenses.