Felix Ure Titan puzzle

thingiverse

This is my recreation of Felix Ure's extremely difficult "Titan" puzzle. Because 3d prints are generally fragile I incorporated my own modifications to make it easy to spin and also makes it robust so it won't break if you drop it on accident because the thing is "slippery" in how you hold it. This model is not parametric without buying different parts to add to it and I wouldn't scale it up anymore because then it won't fit in your pocket easily. Sourcing the individual ball bearings will be the most difficult thing to acquire for this. 1x 608 bearing I used the plastic shielded one but cleaned all the grease out so it can spin freely. This is not required but I like this better than the grease. 1x .125" x .825" metal round rod You can cut the end of a drill bit off or perhaps use a nail. 1x 1.95" (+- 0.020) x 8mm metal round rod This was scrap cut from old linear bearings 2x 9/32" ball bearing These will be a struggle to find just for two. You can find them on ebay but you will probably be buying a pack of 10 or more. I considered using airsoft pellets but felt it would make the puzzle too difficult to solve without being able to hear feedback from the metal to metal contact. After printing the 4 pieces, you can press the 608 bearing and the .125" rod into Top.stl. You want to be sure this pin is flush with or lower than the surface of the flat side. The remaining 3 you should orient like the picture and press them together. I used a rubber mallet on the 8mm rod for these pieces because they were a snug fit. !!!IMPORTANT!!!! Be sure the the two ball bearings and the .125" rod are in no way magnetized to each other or the puzzle will be very difficult or unsolvable. The flat sides should be able to touch when fully assembled. EDIT: Felix Ure is the creator of the puzzle not Hanayama.