Magnetic child lock

thingiverse

Demo video: https://youtu.be/dnjngOsvjrw Child Lock for Furniture. Attach via Double-Sided Foam Tape or Screws. In Armed State, Small Magnet Lifts Main Magnets like a Spring and Lifting the Hook. To Disarm, Enclose the Magnet "Key" at About 5cm, Overdriving the "Spring" Magnet. To Permanently Disarm, Remove the Spring Magnet from the Bottom of the Lock. What You Need for One Lock (BOM): - 1 Inch of 3mm Rod. I Used a Steel One. - Two 6x3mm Magnets - One 4x2mm Magnet You'll Also Need a Big Magnet to Act Like a Key. When Assembling, Assume the Magnets' Polarity. Two 6mm Magnets Must Be in One Polarity and Attract the Key Magnet. The Smaller 4mm Magnet Must Push Away the 6mm Magnets When All is Assembled. To Attach Magnets to Plastic, Use Any ABS Solvent, Apply Some to the Holes Where Magnets Are Meant to Be, Then Push Magnets There and Wait for the Solvent to Vaporize (Max 24 Hours).