

The Po
The Alps and the Apennines, draining to one plain
The Po basin is a trough with mountains on three sides, and that is exactly how it feels in the hand: white Alpine pieces along the north and west, the lower Apennine pieces to the south, and the flat plain between them where nearly all of northern Italy's agriculture and industry sits. The great lake tributaries — Ticino out of Maggiore, Adda out of Como — arrive from the north as long pieces with a lake printed into them.
What a child works out
- A plain is what mountains on two sides produce.
- Italy's lakes are steps in a river, not isolated pools.
- The wettest ground and the flattest ground are next to each other for a reason.
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
The plate
- Pieces
- 17 pieces
- Plate
- 250 × 176 mm
- Scale
- 1 mm ≈ 2.0 km
- Vertical exaggeration
- × 1.65
- Thickness
- 8.8 mm
- Smallest piece
- 106 mm²
- Fit
- 0.35 mm clearance
- Material
- PLA, printed in Switzerland
9 named; the rest are sub-basins the source data leaves unnamed.
B5 — the size of a school exercise book.
How much ground one millimetre of plate covers.
Height is stretched by this factor so the relief is readable at desk size.
Nothing is cut smaller than a child can pick up.
Printed in place, so every piece seats first time without sanding.
Every named piece
- Adda
- Adige
- Dora Baltea
- Oglio
- Oglio 2
- Sesia
- Tanaro
- Tanaro 2
- Ticino
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North America by River
A continent divided only by where water goes
No countries, no states. Twenty-nine pieces, each one the whole territory that drains into a single river.
- Pieces
- 29 pieces
- Scale
- 1 mm ≈ 49.4 km
- Suitable for
- Ages 8 and up
- Price
- CHF 15.00

The Mississippi
The basin that drains a third of a continent
Fifteen pieces — Missouri, Ohio, Arkansas, Red, Illinois — that together are about three million square kilometres of drainage.
- Pieces
- 15 pieces
- Scale
- 1 mm ≈ 14.5 km
- Suitable for
- Ages 8 and up
- Price
- CHF 15.00

The Upper Mississippi
The river before the Missouri joins it
Twenty-one pieces — the Minnesota, the St Croix, the Wisconsin, the Des Moines, the Cedar — draining the northern half of the Mississippi.
- Pieces
- 21 pieces
- Scale
- 1 mm ≈ 4.7 km
- Suitable for
- Ages 8 and up
- Price
- CHF 15.00

