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Models shared by the SO3D.xyz community. Open any of them in the generator to see exactly how it was built, remix it, or print it as-is. Browse the model library by category

Preview of Lo Shu magic-square snack tray
By Krypto
Complexity
Advanced
MAIN PURPOSE: Serve snacks in nine bays numbered so every line adds up to 15
According to legend, a turtle climbed out of the Luo river 4,000 years ago with this pattern on its shell: the numbers 1 to 9 in a square where every row, column and diagonal adds up to 15. Put that many sweets, nuts or grapes in each bay. Whoever picks any straight line of three gets exactly 15. For a puzzle, empty it and ask a child to put the numbers back so the magic still works.
AR view Open in app
Preview of Cookie moon-phase tray
By Krypto
Complexity
Advanced
MAIN PURPOSE: Scrape sandwich cookies into the Moon's phases and lay them round the Earth
Why does the Moon change shape? Twist apart eight sandwich cookies and use a spoon to scrape the cream into each phase: none left for the NEW moon, a thin crescent, half for FIRST quarter, nearly all, all of it for FULL, and back again to LAST quarter. Drop them into the wells in order round EARTH, with the new moon nearest the SUN on the front. The tray shows that the Moon is always half lit by the Sun, and the phase is just how much of that lit half we see from Earth. Then eat the evidence.
AR view Open in app
Preview of Grow-tall savings tower
By Krypto
Complexity
Advanced
MAIN PURPOSE: Save coins in a money box that grows a level taller as each one fills
Saving is easier when you can see it grow. Coins drop through the slot in the top cap and pile up from the bottom, visible through the clear walls. When the coins reach the top of a level, add another one underneath the cap: the tower literally gets taller as the savings grow. Write the goal on the cap with a marker, and lift the levels apart to count up.
AR view Open in app
Preview of Linnaeus flower-clock planter
By Krypto
Complexity
Advanced
MAIN PURPOSE: Plant twelve flowers that open at different hours to tell the time
In 1751 the botanist Carl Linnaeus proposed a clock made of flowers: plant species that open (or close) at known hours in a circle, and you can tell the time by which ones are open. Each of the twelve outer bays is marked with an hour from 6 in the morning to 5 in the afternoon; plant it with a flower that opens then (goat's-beard at 6, African marigold at 7, ice plant at 10, star of Bethlehem at 11, scarlet pimpernel at 2, four o'clocks at 4), and the four middle bays take a sundial or herbs. Each sunny day the flowers open round the clock.
AR view Open in app
Preview of Layered water-filter science kit
By Krypto
Complexity
Advanced
MAIN PURPOSE: Clean muddy water through gravel, sand and charcoal layers
A stacking science kit that shows how water treatment works. Three pierced tiers hold gravel, sand and charcoal, and muddy water poured in at the top drips through each layer into the clear cup at the bottom. Children can swap the layer order and see which is best.
AR view Open in app
Preview of Hummingbird saucer feeder
By Krypto
Complexity
Advanced
MAIN PURPOSE: Feed hummingbirds nectar through ports in a saucer lid
A saucer feeder for hummingbirds and sunbirds: nectar sits in the shallow base, and the pierced top tier has eight feeding ports at beak height, too small for bees to reach the syrup. Saucer feeders don't drip like bottle feeders, and the whole thing comes apart for cleaning. NECTAR is raised in red, the colour these birds look for.
AR view Open in app
Preview of Dog snuffle box
By Krypto
Complexity
Advanced
MAIN PURPOSE: Let a dog sniff out treats through holes in a deck over fleece
Ten minutes of sniffing tires a dog more than a walk. Fill the box with fleece strips and kibble, put the pierced deck on top, and the dog has to nose out every treat through the eight holes. It is a calm, satisfying puzzle for rainy days and for dogs who bolt their food. SNIFF is on the front.
AR view Open in app
Preview of Cabbage-juice pH rainbow plate
By Krypto
Complexity
Advanced
MAIN PURPOSE: Make a pH rainbow with red-cabbage juice in eight labelled wells
Red-cabbage juice is a natural pH indicator. Put it in each of the eight wells, add lemon, vinegar, cola, water, milk, bicarbonate, soap and antacid as labelled, and the plate turns into a rainbow from pink acid to green alkali. It is the most colourful chemistry lesson a kitchen can give.
AR view Open in app
Preview of Magnetic poetry word tray
By Krypto
Complexity
Advanced
MAIN PURPOSE: Sort fridge poetry word magnets by type
Fridge poetry is fun until the words are in one heap. This tray sorts the magnets into NOUNS, VERBS, ADJ, ADV, LITTLE (the, a, of), ENDS (-s, -ed, -ing), NAMES and SPARE, so writing a line becomes picking words instead of hunting for them.
AR view Open in app
Preview of Clay sculpting tool caddy
By Krypto
Complexity
Advanced
MAIN PURPOSE: Stand clay sculpting tools and sponges beside the pottery wheel
A wheel-side caddy for potters. Loop tools, ribs and needle tools stand upright in the tall tube, the sponge sits in a drained cup, and the tray holds the wire cutter and calipers. Clay hands find the right tool without looking away from the pot.
AR view Open in app

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