“The grooves engraved in the two rotating boards are called “logarithmic spirals”. These two grooves always cross at right angles, and a square hole is formed at their intersection.
Cast Helix – Hanayama Metal Puzzle
$10.92
Categories: Hanayama Puzzles, Metal Puzzles, Shop By Category Tag: HANAYAMA
A word from the designer:
“The grooves engraved in the two rotating boards are called “logarithmic spirals”. These two grooves always cross at right angles, and a square hole is formed at their intersection.
“The grooves engraved in the two rotating boards are called “logarithmic spirals”. These two grooves always cross at right angles, and a square hole is formed at their intersection.
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Cast Helix – Hanayama Metal Puzzle








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