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Gearwheel STL Models for 3D Printing

This collection brings together gearwheel STL files for 3D printing, covering simple keychain gears, mechanical parts and toy components. You can compare decorative and functional designs in one place. Check the author's page for dimensions, assembly and print settings before you slice. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

Il testo di questa raccolta è in inglese; la ricerca funziona in qualsiasi lingua.

Una raccolta di Polyzon · 46 modelli da 4 siti

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Polyzon compone questa raccolta a partire dai risultati di ricerca dei siti collegati. I doppioni e i modelli senza anteprima vengono rimossi, le corrispondenze deboli finiscono in fondo e il resto mantiene l’ordine dei risultati. I modelli appartengono ai rispettivi autori: verifica le condizioni sulla pagina di ciascun modello.

Criteri di selezione a cura della redazione di Polyzon · Testo aggiornato: 12/10/2026

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«Gearwheel STL Models for 3D Printing»

The models fall into several practical groups. Decorative gears appear as keyrings, coasters and magnets, often with stylised teeth and a simple shape. Functional gears are made for toys, kitchen devices, power tools or car interiors, where the tooth profile and centre hole matter. Kinetic pieces and holders use gear trains to move or tilt an object.

When choosing a gearwheel model, look at the module or tooth count, outer diameter, bore size and whether the author includes a shaft or keyway. Check how many parts the design has and whether it expects glue, screws or a press fit. For printing, note the layer height and material the author lists, because small teeth can need finer layers and stronger walls. Photos of real prints help you judge how the teeth and hub turn out.

To refine the search, try related terms such as spur gear, helical gear, sprocket, pinion, rack or planetary set. Add a context word like keychain, fidget, toy car, extruder, appliance repair or cosplay prop. If you are looking for a replacement, include the device type and the part's role rather than a brand name.

FAQ

Domande frequenti

What should I check before printing a gearwheel model?
Look at the tooth count or module, outer diameter, bore size and the author's recommended layer height. Also review the part count and assembly method, because a gear that meshes with another part must match its counterpart.
Can I scale a gearwheel model up or down?
Scaling changes the tooth size and the centre distance between meshing gears. If you resize one gear, the matching gear and the housing may also need adjustment.
How do I find a replacement gear for a broken device?
Measure the old gear's tooth count, outer diameter, bore and thickness. Search with those terms plus the device type, and compare the photos and dimensions on the model page.
What is the difference between spur, helical and cross gears?
Spur gears have straight teeth, helical gears have angled teeth, and cross gears change the direction of rotation. The choice affects noise, load direction and how the parts fit together.
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