Top Half of 1" diameter Paper Magnet Puzzle (must order with bottom half... if you want both halves). This is called such because it is designed to lock with a magnet and to be opened with paper or something thin. This particular piece has not been built (a previous version was built and tested and worked fine but I wanted to adjust a few things. I haven't made the new version as I have had no requests). I made two tops and two bottoms, using strong and flexible and detail plastics, either worked fine. To make it according to my design you would want to also order: 4 neodymium magnets which are .060" thick and .250" wide with the magnetic axis through the faces (axial). Also you would want a cylinder .100" in diameter to fit in the holes. 1 hole is for locking in the two repelling magnets, the other two holes are optional. With frosted plastic (slightly transparent) you can put in glowing powder in the top half (recommend V10). Magnets 1 and 2 must be glued in (one in each half) so that they attract each other. Magnets 3 and 4 must not be glued and they must be inserted so they repel each other. I have used common 5 minute two part epoxy and I have used super glue. Either appears to work for the pins and magnets. The magnets should be pushed into position while the glue cures for the best adhesion of the glue. As seen on the first picture this also has a small logo on the inside face (it is small so it can't really be seen in "strong and flexible"). The solution to the puzzle is to use something thin and push magnet 4 back and then slightly rotate the parts and then let the halves come back together and continue rotating until the hook reaches the gap, then pull the halves apart. Fairly simple, but hard to see at first.