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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 Water-drop splash photo rig
By Krypto
Complexity
Advanced
MAIN PURPOSE: Film crowns and jets of water in slow motion as drops fall into a pool
High-speed photographers spend thousands on splash rigs; this one uses the slow-motion mode on your phone. Water drips steadily from a tiny hole in the cup, held high above the pool on a screw-in column, and each drop that lands throws up a crown of water and then a jet that shoots back up. The phone stands in the slot at the pool's edge, perfectly still and at drop level. Add food colouring to the pool, milk to the dripper, and play the clips back frame by frame.
AR view Open in app
Preview of Archimedes float scale
By Krypto
Complexity
Simple
MAIN PURPOSE: Weigh letters, spices or coins by how deep a cup floats in a bowl of water
No batteries, no springs, just Archimedes: a floating cup sinks until it has pushed aside its own weight in water. Because this cup is exactly 40 x 40 mm, every gram you add sinks it 0.625 mm, so the lines on the side are 20 g apart. Float it in a jug, add rice as ballast until the water sits on the 0 line, then drop in a letter, a spoonful of yeast or a gold ring and read its weight where the waterline lands. Check it with coins of known weight first.
AR view Open in app
Preview of Socket-hung charger shelf
By Krypto
Complexity
Simple
MAIN PURPOSE: Hold a charging phone on a shelf that hangs from its own charger plug
A phone charging from a low socket ends up on the floor, dangling or tripping someone up. This shelf needs no screws: the plug-in charger sits inside it, pins out through the hole in the back, and when you plug it in, the charger itself holds the shelf flat against the wall below the switch. The phone stands in the front, its cable coiled out of sight behind it. It works with UK, European and US two-pin and three-pin chargers.
AR view Open in app
Preview of Square-egg press
By Krypto
Complexity
Multi-part assembly
MAIN PURPOSE: Turn a hot boiled egg into a perfect cube for lunch boxes and bento
A hot boiled egg is surprisingly soft. Peel it while it is still hot, drop it into this box and press the lid down over it: the lid squeezes the egg into the square chamber, and ten minutes in iced water sets it in shape. Out comes a cube with sharp corners that slices into square egg pieces for sandwiches, stacks in a bento and makes children ask how. It was a craze in Japan in the 1970s.
AR view Open in app
Preview of Two-tone flower vase
By Krypto
Complexity
Medium
MAIN PURPOSE: Split a white flower's stem between two dyed waters and grow a two-coloured bloom
Flowers drink through tiny tubes in their stems, all the way up to the petals. Fill one side of this twin vase with blue food-coloured water and the other with red, split the stem of a white carnation down the middle, and put one half in each. Within a day the petals turn blue on one side and red on the other, a striking table flower and a lesson in capillary action. BLUE and RED are raised on the two chambers.
AR view Open in app
Preview of Bottomless infinity ring dish
By Krypto
Complexity
Simple
MAIN PURPOSE: Rest rings over a glowing tunnel of lights that seems to go down forever
Drop your rings on this dish and they seem to hover over a tunnel of lights falling away into the table. The floor holds a mirror, a strip of LEDs runs round the walls, and the dish surface is a one-way mirror resting on the ledge: light bounces back and forth between the two mirrors, and each bounce looks deeper. Switch it on at night and it becomes a bedside light too; switch it off and it is a plain mirror dish.
AR view Open in app
Preview of Venn diagram snack bowl
By Krypto
Complexity
Advanced
MAIN PURPOSE: Serve three snacks in overlapping circles whose overlaps hold the mixes
Three round bowls overlap like a Venn diagram, and the crossing walls split them into seven bays: one for each snack on its own, three lens-shaped bays where two of them meet, and a little triangle in the middle where all three meet. SWEET, SALTY and SPICY are engraved in the floors. Fill the overlaps with the mixes (chocolate pretzels, chilli chocolate, spicy crisps) and let the table argue about what belongs where. Relabel it for any three things you like.
AR view Open in app
Preview of Clear-ice directional freezing box
By Krypto
Complexity
Simple
MAIN PURPOSE: Freeze crystal-clear ice from the top down in a thick-walled box
Bar-clear ice is not about boiled or filtered water: it is about which way it freezes. In an ordinary tray the water freezes from every side at once and traps air and minerals in a cloudy middle. This box has 5 mm air-filled walls and stands on feet, so the cold can only get in through the open top. The ice grows straight down and pushes the bubbles ahead of it, leaving a clear block on top and a small cloudy plug at the bottom that you lift out before it freezes. Cut the block into cubes or spheres with a bread knife.
AR view Open in app
Preview of Egg float-test freshness cup
By Krypto
Complexity
Simple
MAIN PURPOSE: Check how fresh an egg is by whether it lies, stands or floats
Every egg has a little air cell that grows as it ages, so an old egg slowly turns into a float. Fill the cup with cold water and lower an egg in. Lying flat on the bottom by FRESH: perfect for poaching. Standing on its point by USE SOON: fine for baking or hard-boiling. Floating up by BIN: throw it out. The tall, narrow cup takes one egg at a time and the three levels are raised in green, gold and red.
AR view Open in app
Preview of Conveyor-belt sushi party tray
By Krypto
Complexity
Medium (set)
MAIN PURPOSE: Slide little sushi plates round an oval track like a conveyor-belt bar
Kaiten-zushi at home. A 44 mm track runs right round an oval tray, past a central island for the soy sauce, wasabi and ginger. Load little plates of sushi onto the track, and the guests push the train round, taking what they like as it passes, just as in a conveyor-belt sushi bar. It works for tapas, dim sum and dessert bites too.
AR view Open in app

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