Ring Cross Puzzle

I saw this from somebody who built it in wood for his sun and I created the files with OnShape to print it with 3D printer.I also used the possibility to add a magnet and a steel rod so it is not so easy to open...You would need two filaments, the second one should be silver/metallic maybe Silk. Next to the pin is a tower which is there only to speed down printing and it could be disposed after print. If you use a magnet (5mm round x3mm) and a 5mm (max 5.3mm) x 25mm steel rod (you may cut off a 25mm peace from a M5 screw) you may avoid the pin and assemble with magnet.