Jim Aubert is a Sandia National Laboratory scientist developing a new adhesive that loosens when heated. His epoxy adhesive is temperature dependent, so it sticks at room temperature, but at elevated temperatures it melts and allows separation. "Our approach relies on reversible chemistry that breaks apart the adhesive at elevated temperatures," says Aubert. For more information, go to www.sandia.gov.
A make-your-own Star Wars Sith Lightsaber hilt is heftier and better-looking than most others out there, according to its maker, Sean Charlesworth. You can 3D print it from free source files, and there's even a hardware kit available -- not free -- so you can build one just in time for Halloween.
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