Not the most exciting design, but I love magnets and use them to fasten things all the time. I simply needed a hook on my fridge to hang a bag from. Not too much to ask.
This print uses a pair of 20mm x 5mm countersunk neodymium magnets that you can buy from any number of the usual purveyors of online neodymium magnets. You can either glue the magnets in place or do as I did, and simply melt them into place with the centre bit. Ideally use something made of brass to melt the centre bit as other metals can be somewhat “magnetic”.
The author hasn't provided the model origin yet.