Thirty Notched Pentagonal Sticks - STC #65
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Modified version of Mr. Coffin's puzzle with reduced radius sticks.
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- Printables
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- Puzzles & Brain-teasers
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Thirty Notched Pentagonal Sticks - STC #65
6-color version in individual STL files – pieces are 15 cm long, and 2cm diameter.
Single color version in a single STL file. pieces are 9cm by 1.25 cm
Dimensions easily adjusted in the OpenSCAD program.
Modified version of Mr. Coffin's puzzle with reduced radius sticks.
This avoids the problem he notes in: AP-ART A Compendium of Geometric Puzzles by Stewart Coffin 2018: "Notice that each stick intersects with five others and must be notched accordingly. It turns out those notches are so deep that they would likely cut the sticks into pieces."
With inspiration from my construction of the puzzle on: http://www.2ndlook.nl/3dpuzzles/puzzles/sirius/engdescription.htm
by Grant M Erickson, 04 Nov 2025.
This is a 30 piece puzzle with pentagonal cross-section pieces. All pieces tangent to a face of a rhombic tricontahedron.
Design by Stewart Coffin
Additional design components by Peter Query
OpenSCAD program by Grant M Erickson, 04 Nov 2025 2025.