Extension Cord Lock
thingiverse
One of the more annoying things when working with electric tools in the garden is to suddenly find out that you lost power because your extension cord made from 2 or more cords got disconnected in the middle. It is especially annoying when you are at the top of long ladder or on the roof. This lock gently pinches cords and locks them so they can't disconnect easily because of pulling. You can also wrap each end one time around, making it impossible to disconnect by force before physically breaking the lock. It works for me and may work for other folks.
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