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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
MAIN PURPOSE: Train listening by matching shaker sounds
Print six capsules, fill pairs with rice, lentils and beads, and glue the screw lids shut: the child shakes and listens to find the three matching pairs, and the letters engraved underneath confirm the answer. A Montessori listening game that costs pennies.
Printing notes
20.4 cm³
Volume
25.3 g
Est. weight
2,664
Triangles
Print six; glue the lids once filled. 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.
MAIN PURPOSE: Launch paper aeroplanes with a rubber band
Loop a rubber band over the notch at the tip, hook it under a paper plane's fold or a paperclip nose, pull back and let go: planes fly three times further and straighter than from a hand throw, so children can test which fold really flies best.
Printing notes
15.9 cm³
Volume
19.7 g
Est. weight
152
Triangles
Print in PETG. Prints flat as a plate, no supports.
MAIN PURPOSE: Identify the weight of an unlabelled yarn
Wind an unlabelled yarn round the stick between the notches, side by side without stretching, and count the wraps: 1 inch or 2 inches gives the WPI that tells lace from DK from chunky. Leftover and hand-spun yarn can be matched to a pattern without guessing.
Printing notes
6.5 cm³
Volume
8.1 g
Est. weight
2,248
Triangles
Prints flat as a plate, no supports.
MAIN PURPOSE: Weave narrow bands and straps by hand
A Sami-style heddle with nine slots and eight holes: thread the warp alternately and lift or lower the heddle to open the two sheds, weaving narrow bands, straps and belts on the lap with the warp tied to a belt. Seventeen warp ends make a 2 to 3 cm band.
Printing notes
26.7 cm³
Volume
33.1 g
Est. weight
1,914
Triangles
Print in PETG; smooth the slots with fine paper. Prints flat as a plate, no supports.
MAIN PURPOSE: Roll paper strips into jewellery beads
Slip the narrow end of a paper triangle into the slit, turn the handle and the strip winds into a tight bead around the 7 mm tine; dab glue on the tail and slide the bead off. Magazine pages become jewellery beads without the strip unwinding from a cocktail stick.
Printing notes
6.3 cm³
Volume
7.8 g
Est. weight
176
Triangles
Prints flat as a plate, no supports.
MAIN PURPOSE: Scribe level lines round pots on a banding wheel
Push a pencil through one of three pairs of holes so its tip touches the pot, then turn the banding wheel: the line comes out perfectly level all the way round, ready for wax resist, a glaze dipping line or a decoration band. The foot behind the tower stops it tipping.
Printing notes
10.0 cm³
Volume
12.4 g
Est. weight
1,208
Triangles
Prints as shown on its floor, no supports.
MAIN PURPOSE: Open jump rings with one pair of pliers
An open ring worn on the index finger with two slots on its crown: hold a jump ring in one slot and twist it open sideways with pliers in the other hand. One tool replaces the second pair of pliers, and the twist keeps rings round instead of pulled apart.
Printing notes
2.3 cm³
Volume
2.8 g
Est. weight
1,764
Triangles
Print in PETG; the split ring adjusts to the finger. Prints as shown on its outline, no supports.
MAIN PURPOSE: Shape hand-knitted socks while they dry
A flat foot form, 220 mm from heel to toe: slip a freshly washed hand-knit sock over it and let it dry, and the sock keeps an even shape and opens up its lace or colourwork pattern. Hang it by the hole while it dries; print two for a pair.
Printing notes
84.2 cm³
Volume
104.4 g
Est. weight
356
Triangles
Print two in PETG; fits a 230 mm bed. Prints flat as a plate, no supports.
MAIN PURPOSE: Weave patterned bands with turning cards
A pack of 64 mm square cards with a hole in each corner labelled A to D: thread four warp ends through each card, then turn the stack forwards or backwards to twist the warp and weave patterned bands. Printed cards stay flat and smooth where cardboard frays and catches threads.
Printing notes
7.9 cm³
Volume
9.8 g
Est. weight
5,420
Triangles
Print 20 or more. Prints flat as a plate, no supports.
MAIN PURPOSE: Build adjustable boxes for silicone moulds
Four identical L walls with one arm set a wall's thickness further out: rotate each by 90 degrees and every inner arm slides inside its neighbour's outer arm, so the four make any mould box from 60 to 180 mm square. Clip the overlaps, seal the base with plasticine and pour silicone or resin.
Printing notes
31.2 cm³
Volume
38.6 g
Est. weight
184
Triangles
Print four in PETG. Prints as shown on its outline, no supports.