Professor's Snake Tetrahedron

myminifactory

This is a 5-layer folding tetrahedron puzzle, requiring you to transform from an unfolded linear configuration into a folded tetrahedron one. Be prepared for a challenging experience, as this puzzle demands patience and persistence. The goal is not for the faint of heart. A key element in solving this puzzle is the string that runs through all the pieces, connecting them and allowing them to rotate. This string passes through 2.5mm diameter holes found in each piece. To achieve optimal results, it's advisable to use a non-elastic string. You will need to print one of each type of piece, but keep in mind you'll require two of piece 39, as it serves as the cap that covers the ends of the string. For easier printing, I recommend using STL files that have all the parts nested together or half of them, depending on your available print area. First, cut a length of string approximately 750mm long to ensure you have an adequate amount of excess. Then tie a knot at one end of the string so that it cannot pass through the hole in any piece. Each piece has two holes, and one is numbered. The string should initially enter the piece labeled 1, followed by piece 2, and so on. The string must always enter the hole with the number on it and exit out of the unlabeled hole. Once you have placed every piece on the string, tie a knot at the other end to prevent the pieces from coming loose. It is crucial to pull the string as tightly through the puzzle as possible before tying the knot. Additionally, try to secure the last knot near the exit hole of the final piece; using tweezers can be helpful in this process. Once the last knot is tied, you can remove any excess string and use hot glue to hold it in place. This ensures that the pieces are held as close together as possible. Finally, simply place the caps over the ends to conceal the knots and the hot glue.