Magnetic Spare Key Holder

prusaprinters

This is a spare key holder that has a hard drive magnet inside. The magnet allows you to stick the box on any steel object (Like the underside of a car). I super-glued the magnet in place and then placed the key inside. After that, I glued the lid on - I figure, if I need to use this, I'll break it open. UPDATE v2.3:This is a slight improvement over v2 and removes the required insert and screw. This makes it easier to get into the box. In my case, after a winter in the snow, the bolt had rusted and made it quite hard to get into. UPDATE v2:The v2 model has some changes for “re-usability”.  You will need some hardware for v2.4 magnets: 6×3MM https://a.co/5wd4s3KM3x4x5 Hot Metal Inset: 1x: https://www.aliexpress.us/item/3256802437814714.htmlM3x12 or longer bolt.