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You reminded me of an old trick (now expired) that my grandma taught me: take the magnet out of used Sonicare toothbrush heads, wrap the magnet in electrical ta
by Fezzik 5y ago
You reminded me of an old trick (now expired) that my grandma taught me: take the magnet out of used Sonicare toothbrush heads, wrap the magnet in electrical tape creating a pull-tab, and you have a rather powerful refrigerator magnet! Sonicare removed the original magnet vibrating mechanism quite a while ago so this no longer works, but I love creative reuses like this for items.
- mkmk 5y agoHow do they vibrate, then?
- Isomatik 5y agoLooks like the original version is driven by a coil electromagnet which deflects rare earth magnets in the brush head. https://www.powerelectronictips.com/teardown-whats-inside-a-phillips-sonicare-electric-toothbrush/ https://www.powerelectronictips.com/teardown-whats-inside-a-...
- Fezzik 5y agoI am 100% unsure, but if you hold a modern Sonicare toothbrush head up to a refrigerator door the magnetism (if any) is not even strong enough to hold the head to the door. The old models had two dark-black rectangular magnets (many of which I still use to affix postcards to my fridge) and the new ones have light silver circular “magnets”. The ‘how/why’ is well beyond my scope of knowledge.