International Woodworking Fair
Take the holding power of a rare-earth magnet, double that power, and then make it so you can switch that powerful pull off and on, and you get Magswitch. Two rare-earth magnets are stacked up inside each Magswitch housing. Turn the knob (or screw head) to the "on" position and the magnets' poles align for a super-strong hold; rotate the knob about 180 degrees and the poles cancel each other out, effectively turning the magnet "off." The next slide shows one use for this technology.
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