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Tower of Hanoi — Parametric Educational Stacking Puzzle — zdjęcie 1
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Tower of Hanoi — Parametric Educational Stacking Puzzle

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Classic recursion puzzle: move a graduated stack of discs across three pegs, one at a time

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Printables
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Creative Commons — Attribution

A classic problem-solving toy. Move the whole graduated stack of discs from one peg to another, one disc at a time, and never place a larger disc on a smaller one. With n discs the minimum number of moves is 2^n minus 1 (5 discs = 31 moves, 7 = 127) — a tidy lesson in recursion and patience.

Six parts, print-and-play (no assembly):

  • base.stl — board with three domed pegs. Print this in a WOOD-FILL PLA for the wood-grain relief shown in the photo (the grain is a surface heightfield carved into the board).

  • disc_1.stl to disc_5.stl — the five graduated discs, smallest to largest. Print each a different colour for a rainbow set, or assign per-object filaments on one AMS plate.

Parametric. The whole model scales from n_discs (default 5, classic range 3 to 9): base width, peg spacing, peg height and the full disc set all follow. Bore clearance is a loose 0.4 mm per side so small hands stack easily. The attached .scad rebuilds at any disc count.

Print. No supports. Base prints flat (pegs up, domed tips self-support); discs print flat on the bed. Default 5-disc build is 248 x 92 mm and fits a 256 mm Bambu bed.

Safety. Smallest disc diameter stays above the small-parts choke gauge (about 32 mm) and every edge is filleted — no sharp corners or points. Ages 3+.

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