Bead-and-loop rope puzzle — 3D-printable model preview
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Bead-and-loop rope puzzle

Solve a cord and bead disentanglement puzzle

The classic patience puzzle: thread a cord through the three holes with a large bead on each end so both beads hang on opposite loops, then work out how to bring them together without untying anything. The holes are smaller than the beads, so the only way is to understand the topology.

Size
110 × 30 × 10 mm
Shape
Rectangular
Walls
5.0 mm
Volume
16.0 cm³
Est. weight (PLA)
19.8 g
Parts to print
1
Made by
Krypto
Built in
28 steps

What’s in it

  • Rectangular, 110 × 30 × 10 mm, with 5.0 mm walls
  • 3 holes in the floor

How to print it

Add 60 cm of cord and two 15 mm beads.

Prints flat as a plate, no supports.

Filament: at most about 19.8 g of PLA printed solid (roughly $0.40 at $20 per kg); normal infill uses less.

To get the files, open it in the generator and choose File › Download STL (one file per part) or Download 3MF (every part on one plate).

Questions

What size is the bead-and-loop rope puzzle model?

The bead-and-loop rope puzzle model measures 110 × 30 × 10 mm (width × depth × height). You can change every size in the free SO3D.xyz generator before you download it.

Does it need supports?

No. Add 60 cm of cord and two 15 mm beads. Prints flat as a plate, no supports.

How much filament does it use?

At most about 19.8 g of PLA (16.0 cm³ printed solid), roughly $0.40 of filament at $20 per kg. Normal infill uses less.

Can I change it?

Yes. Open it in the SO3D.xyz generator (free, in your browser), change the size, walls, dividers, holes, text or anything else, then download it as STL or 3MF for your slicer.

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Make it fit your space

Change the size, walls, dividers, holes and labels of the bead-and-loop rope puzzle model in your browser, then download it for your printer. Free, no CAD needed.

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