Scientists Use Ultrasound to Make Cold Brew Coffee in 3 Minutes Instead of 24 Hours ( www.404media.co )
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High pressure, high forces, long lever arms...all of that meant heavy and strong (read: expensive) parts which I was not looking forward to having to fabricate. Instead, I settled on the simpler idea of harnessing the power of compressed gas. Instead of using a high mechanical advantage lever to push a piston, compressed CO2...