Models Showcase: free 3D-printable organizers

By Krypto

Complexity

Simple

Kitchen Food preparation

0

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.

Printing notes

3.1 cm³

Volume

3.8 g

Est. weight

12,048

Triangles

Float it in a jug of fresh water and add rice inside until the waterline sits on 0. Then each 20 g sinks it 12.5 mm to the next line. Prints as shown on its floor, no supports.

AR view Open in app

By Krypto

Complexity

Multi-part assembly

Kitchen Food preparation

0

Square-egg press

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.

Printing notes

18.6 cm³

Volume

23.1 g

Est. weight

184

Triangles

Peel a medium egg while still hot, push it in, press the lid down and hold it with a rubber band; chill for 10 minutes in iced water. Prints as shown on its floor, no supports. The lid prints as a separate part, top down.

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By Krypto

Complexity

Advanced

Kitchen Serving & table

0

Venn diagram snack bowl

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.

Printing notes

197.7 cm³

Volume

245.1 g

Est. weight

11,236

Triangles

Food-safe PETG. Print it as one piece; the walls where the circles cross make all seven bays. Prints as shown on its floor, no supports.

AR view Open in app

Preview of Clear-ice directional freezing box

By Krypto

Complexity

Simple

Kitchen Food preparation

0

Clear-ice directional freezing box

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.

Printing notes

94.1 cm³

Volume

116.7 g

Est. weight

3,952

Triangles

PETG with 5 mm walls and 15% infill so the walls trap air. Fill to 2 cm below the rim, freeze for about 20 hours, then lift the block out before the bottom freezes. Prints as shown on its floor, no supports.

AR view Open in app

By Krypto

Complexity

Simple

Kitchen Food preparation

0

Egg float-test freshness cup

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.

Printing notes

75.1 cm³

Volume

93.2 g

Est. weight

11,816

Triangles

Clear or natural PETG so you can see the egg. Fill with cold water to just below the rim. Prints as shown on its floor, no supports.

AR view Open in app

Preview of Conveyor-belt sushi party tray

By Krypto

Complexity

Medium (set)

Kitchen Serving & table

0

Conveyor-belt sushi party tray

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.

Printing notes

114.5 cm³

Volume

142.0 g

Est. weight

1,060

Triangles

Food-safe PETG. Print a set of small 40 mm plates in two or three colours to go round the track. Prints as shown on its floor, no supports.

AR view Open in app

By Krypto

Complexity

Multi-part assembly

Kitchen Food storage

0

Ethylene ripening bell

MAIN PURPOSE: Ripen a hard avocado overnight by trapping a banana's ethylene under a bell

Ripe bananas give off ethylene, the gas that tells fruit to ripen. Under this bell it cannot escape. Put a hard avocado, pear, kiwi or peach on the lid with a ripe banana beside it, turn the bell over them and the fruit is ready in one or two days instead of a week. Flip it back over to store it. RIPEN is raised on the lid, which doubles as the plate.

Printing notes

380.4 cm³

Volume

471.7 g

Est. weight

2,848

Triangles

Print the bell open side up, as shown; in use the lid is the plate and the bell goes over it. Prints as shown on its floor, no supports. The friction-fit lid and its neck piece print separately; adjust Fit in the Lid tab if it binds.

AR view Open in app

By Krypto

Complexity

Multi-part assembly

Kitchen Baking & sweets

0

Shake-up ice-cream maker

MAIN PURPOSE: Make ice cream in ten minutes of shaking with ice and salt

No machine needed. Pour 200 ml of cream, a spoon of sugar and a drop of vanilla into the centre cup. Pack the 20 mm jacket round it with crushed ice and two big spoons of salt, screw the lid on, wrap it in a tea towel and shake or roll it across the floor for ten minutes. Salt drops the melting point of the ice to about minus 10 degrees, cold enough to freeze the cream as it churns. SHAKE is raised on the front.

Printing notes

274.5 cm³

Volume

340.3 g

Est. weight

5,112

Triangles

Food-safe PETG, 3 walls. Cover the centre cup with cling film before screwing the lid on, so no salt water gets in. Prints as shown on its floor, no supports. The threaded lid and its neck piece print separately; adjust Fit in the Lid tab if it binds.

AR view Open in app

By Krypto

Complexity

Simple

Kitchen Kitchen organisers

0

Oldest-first tin dispenser

MAIN PURPOSE: Load tins at the top and take them from the bottom so the oldest is used first

Shops rotate stock so nothing goes out of date; this tower does it at home. New tins go in at the top and drop down the stack, and you always take the bottom one through the arch at the front, which is always the oldest. A slot up the front shows how many are left, so you know when to buy more. OLDEST FIRST is raised on the front.

Printing notes

42.1 cm³

Volume

52.3 g

Est. weight

9,028

Triangles

Takes flat tins up to 90 mm across (tuna, sardines, cat food). Print upright. Prints as shown on its floor, no supports. Large holes in the walls may need supports or good bridging.

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Preview of Crisp-or-chewy cookie jar pair

By Krypto

Complexity

Multi-part assembly

Kitchen Baking & sweets

0

Crisp-or-chewy cookie jar pair

MAIN PURPOSE: Keep crisp cookies crisp and soft cookies soft in two sealed jars

Crisp and chewy cookies spoil each other in one jar: moisture moves from the soft ones to the crisp ones until they are all limp. These are two jars joined at the hip, each with its own lid, so their air never mixes. A silica sachet keeps the CRISP side snapping; a slice of bread in the CHEWY side keeps brownies and soft cookies soft for days, as the cookies take moisture from the bread.

Printing notes

358.1 cm³

Volume

444.0 g

Est. weight

14,860

Triangles

Food-safe PETG. Put a food-safe silica sachet in CRISP and a slice of bread in CHEWY; swap them every few days. Prints as shown on its floor, no supports. The friction-fit lid and its neck piece print separately; adjust Fit in the Lid tab if it binds. The added base's lid prints separately.

AR view Open in app