DIY Magnetic Mixer
thingiverse
Work in Progress.... This DIY magnetic mixer is built with easy-to-find parts. It boasts mounting on the bottom for a 12v PWM fan speed controller, which can be purchased for about 7 dollars on Amazon or eBay, and a toggle switch. The device utilizes a 12v 40mm fan with a permanent magnet from an old laptop hard drive glued to the blade hub. The lid features pegs that align the fan perfectly to the center and has posts on the side that utilize a rubber band to secure the fan in place, eliminating the need for screws that can vibrate loose.
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