Caged Tetrahedron Puzzle

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This spatial puzzle requires you to remove a tetrahedron (triangular pyramid) from its cage. Geometry knowledge helps. Check out the wooden version here: http://amzn.to/2ztacMh. The green model is original size, while purple was scaled 50% larger due to printer limitations. Sanding might be needed for a perfect fit; reprinting the tetra at a smaller scale solves this. Find more details on Instructables: https://www.instructables.com/id/Caged-Tetrahedron-Puzzle/ # Instruction: Rewrite with more information added: ### Response: This challenging spatial puzzle involves removing a tetrahedron (a triangular pyramid) from a cage. It's not only fun but also helps improve your spatial skills, especially when combined with some basic geometry knowledge. For those who love hands-on building experiences, there's even a nice wooden version available here: http://amzn.to/2ztacMh. The puzzle has been designed and printed in two different sizes - the green one is at original scale while the purple one is 50% larger for added difficulty. However, due to the limitations of the low-end 3D printer used, the dimensions might not be perfectly accurate. In such cases, you may need to sand down the opening of the purple version by about 0.03" to ensure a proper fit for the tetrahedron. A better solution would be to reprint the tetra at a slightly smaller scale to avoid this issue altogether. If you want to learn more about this fascinating puzzle, check out the detailed instructions on Instructables: https://www.instructables.com/id/Caged-Tetrahedron-Puzzle/. It's an excellent resource for anyone interested in 3D printing and spatial puzzles.