This page was added to the expanded Crafty Puzzles reference library after the original shop closed. It is based on current manufacturer information and does not claim that the original Crafty Puzzles store sold this model.
How to recognise Foucault's Pendulum
Manufacturer: SiamMandalay. Mechanism: wood-and-string disentanglement puzzle. Objective: Untangle the pendulum-style arrangement without cutting or untying the cord.
The manufacturer describes this model as Level 3 (Difficult). The official dimensions are 5.5 × 2.25 × 6.25 in.
Try a hint before opening the full solution
These are original Crafty Puzzles strategy hints based on the documented mechanism; they do not reproduce the manufacturer’s step-by-step instruction sheet.
Hint 1
Do not untie knots or stretch the cord; the intended solution comes from passing solid parts through available loops.
Hint 2
Trace the cord from one fixed point to the other and note which loop can temporarily become larger when slack is moved elsewhere.
Hint 3
Preserve the starting orientation while experimenting so you can distinguish real progress from simply twisting the cord.
Official Foucault's Pendulum solution
Use the manufacturer resource for the exact sequence
SiamMandalay maintains the product record and a solutions library. Crafty Puzzles links to those resources rather than copying their protected photographs or instruction material.
Find this or a similar puzzle
Advertisement / paid links: As an Amazon Associate I earn from qualifying purchases. As an eBay Partner, I may be compensated if you make a purchase.
Availability changes. These buttons search for this named puzzle or close alternatives; confirm the maker, piece count and mechanism before buying. Affiliate disclosure.
Source and verification
- Source
- SiamMandalay official product record — open source
- Information checked
- 24 October 2026
- Verification status
- Official manufacturer identity, piece count/mechanism where stated, dimensions and difficulty checked; exact solution retained externally
- Page status
- Added during archive research
- Rights handling
- Third-party source — link only — Crafty Puzzles provides its own identification notes and progressive hints, then links to the original manufacturer for the full solution resource rather than copying third-party photographs or manuals onto this site. Read the site-wide policy