Simple puzzle with a ring

I rembered making a puzzle as a project with friends in high school (more than 20 years ago), but was not able to find any informations on it (pictures, blue print, …), so I decided to do it from scratch from what I remembered we did on our milling and lathe and this is the result.For the puzzle, you need to print 1 body, 1 ring, 2 cylinders and 2 discs. Only the body need support. In my case, I prefer to print each kind in different color. You will also need 30 cm of some string. In this case I used braided nylon cord like this one https://www.amazon.com/AXLIZER-Braided-Lifting-Aluminum-Projects/dp/B095JL8XNC/. I advise you to use a 2mm diameter cord since the holes are 3mm. If you go for the braided nylon cord, you will need a lighter to burn the tip a bit.The assembly goes like this :slip the string through the hole of one disc and make a knot (or more if it is a low diameter string). This way, the disc can not esacpe from the string.now put a cylinderand now the body with the ring