Laser scanning microscopes are useful for all kinds of tiny investigations. As it turns out, you can build one using parts salvaged from a Blu-ray
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Building A Chain Drive Differential From Junkyard Parts
A differential is a very useful thing for a vehicle. It allows two driven wheels to rotate at different speeds, such as when going around
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Better Sheet Metal Parts With Chemistry
[Applied Science] wanted to make some metal parts with a lot of holes. A service provider charged high tooling costs, so he decided to create
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