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The Limmat relief puzzle, seen at an angle
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15 piecesZürich, Schwyz, Glarus

The Limmat

Zürich's water, from the Glarus Alps down

▶ Play it online

The Limmat is the Linth after the lake, and this plate covers the whole run: glaciated valley heads in Glarus, the Linth plain, Lake Zürich as a long blue channel, and the city at the outflow. The Sihl comes in as its own piece. Anyone who lives in Zürich has walked over three or four of these pieces without noticing they were separate places.

What a child works out

  • A lake is a wide part of a river, not a different thing.
  • The same water has different names along its length.
  • A city sits where it does because of the water.
CHF 15.00

A download, to print yourself

  • A .3mf file with the colours already assigned
  • One STL per piece, for any other slicer
  • A print guide with the settings and the order to print in
  • For your own use; the licence is in the download

What you need to print it

  • A build plate that takes 250 × 176 mm: the Bambu Lab A1, P1S and X1C (256 mm) do, the A1 mini (180 mm) does not
  • A multicolour setup such as an AMS, for the colours as designed

Printed it? Got an idea?

Send me photos of your print and I'll add them to this page — or tell me what you'd add, leave out or change on The Limmat.

The plate

Pieces
15 pieces

3 named; the rest are sub-basins the source data leaves unnamed.

Plate
250 × 176 mm

B5 — the size of a school exercise book.

Scale
1 mm ≈ 517 m

How much ground one millimetre of plate covers.

Vertical exaggeration
× 1

Height is stretched by this factor so the relief is readable at desk size.

Thickness
8.8 mm
Smallest piece
117 mm²

Nothing is cut smaller than a child can pick up.

Fit
0.35 mm clearance

Printed in place, so every piece seats first time without sanding.

Material
PLA, printed in Switzerland

Every named piece

  • Rhein
  • Sernf
  • Sihl

Zoom in, zoom out

A piece of each of these is the subject of the next one. Each plate is redrawn at its own scale, so it is a real map at every level rather than an enlargement of the one above.

Follow the water — The Rhine down to the river that runs through Zürich

  1. Level 1
    The Rhine1 mm ≈ 3.4 km
  2. Level 2
    The Aare1 mm ≈ 1.1 km
  3. Level 3
    The Limmat1 mm ≈ 517 m

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