Printer parts

Knob, Wheel and Sprocket STL Models

This collection gathers STL files for knobs, hand wheels, sprockets, and related mechanical parts. It covers control grips, vehicle interior pieces, printer upgrades, and small wheeled builds. Use it to find a starting point, then check the author's page for scale, parts, and print settings. Polyzon does not confirm whether models are free, their price, license, official status, affiliation, safety or fitness. Check the current terms at the source.

A Polyzon collection · 46 models from 6 platforms

How this collection is put together

Polyzon assembles this collection from search results on the connected platforms. Repeats and models without a preview are removed, weak matches go to the end, and the rest keeps the search order. Models belong to their authors — check the terms on each model's page.

Selection rules: the Polyzon editorial team · Text updated 2026-10-11

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About the category

«Knob, Wheel and Sprocket STL Models»

The models range from simple control knobs and hand wheels to sprocket wheels, handles, and printer or CNC parts. Some are single pieces that replace an existing knob, while others are multi-part assemblies or adapters that connect a wheel to a tool or shaft. Vehicle-related items include steering wheel add-ons and interior adjustment knobs, which differ in mounting style and diameter.

When choosing a model, check the size and scale first, then look at the number of parts and whether assembly is required. Review the material and settings the author lists, and look for photos of real prints to judge surface detail and fit. For sprockets and wheels, confirm the tooth profile, bore diameter, and mounting pattern before printing. Also check whether supports are needed for overhangs.

To refine the search, try synonyms such as handwheel, control knob, sprocket gear, drive wheel, or replacement handle. Related topics include printer upgrade parts, RC and track systems, vehicle interior trim, and mechanical adapters. Combining a part type with a mounting style or shaft size often narrows the results faster than a single broad term.

FAQ

Frequently asked questions

What is the difference between a knob, a hand wheel, and a sprocket in 3D printing?
A knob is usually a small grip turned by hand, a hand wheel is a larger circular control, and a sprocket has teeth that engage a chain or track. The model page should show the mounting method and dimensions for each type.
How do I choose the right scale for a wheel or knob model?
Measure the shaft or mounting point on the original part and compare it with the dimensions in the model description. If the model is parametric, adjust the scale before exporting the STL.
What should I check before printing a sprocket?
Check the tooth count, pitch, bore size, and any keyway or set screw details shown by the author. Also review the recommended material and orientation, since these affect wear and strength.
Can I adapt a steering wheel knob to a different vehicle?
Adaptation depends on the steering wheel rim shape and the clamp or strap design. Compare the mounting dimensions and the author's notes before printing.
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