Twenty-Four-Piece Luban Lock: Coffin Length-4 3D & STL
Coffin length-4 · 二十四根
Twenty-four sticks: twelve left-handed and twelve right-handed, each with four notches (Coffin Altekruse length-4 / Ishino Sol.1).
The first move is still a mutual opposite half-slide — like the twelve-piece form, with twice the sticks.
- Pieces
- 24 (12 left + 12 right)
- Notches
- Four per stick
- First move
- Mutual opposite half-slide
- Atlas name
- 二十四柱 (folk count)
Assembled twenty-four: 12 left + 12 right (Coffin length-4 / Ishino Sol.1).
Drag to orbit; scrub the slider for the half-slide.
How it works
How it bites
Left- and right-handed sticks pair across the lattice. Market notches may differ; atlas 二十四柱 matches this count-family.
Free STL downloads
- Length-4 left stick — print ×12 altekruse24-piece-left.stl
- Length-4 right stick — print ×12 altekruse24-piece-right.stl
- Assembled 24-piece (reference) altekruse24-assembled.stl
Twelve left + twelve right — prefer printing the left and right masters twelve times each. Suggest 7–9 mm/u. Licence CC BY 4.0. See the CNC and 3D-printing notes.
Questions
How does it open?
A mutual opposite half-slide of two groups, as in the twelve-piece Altekruse, with twice as many sticks.
Can I print it?
Yes. Prefer printing the left and right masters twelve times each.