Mini Functional Piston – Powered by TT Motor
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Bill of Materials
Description
This mini functional piston is a fully 3D printed mechanical model designed for easy printing and straightforward assembly.
It requires just four screws BT3X6, a TT motor, and a 608 bearing. (3D printed bearings work as well, i recommend this parametric bearing generator)
Mounting instructions:
The piston rod is permanently fixed to the piston with glue, while the crankshaft components are designed with a tight fit — they can be assembled without glue, or glued in place for extra security.
The guide piece that defines the piston’s travel is glued to the rear wall, slotting neatly into a dedicated groove for perfect alignment.
For smoother operation and reduced friction noise, a thin piece of plastic (for example, cut from a shopping bag) can be glued to the contact surface of this guide piece.
The TT motor mounts from the back, with its shaft press-fitted directly into the crankshaft for a secure, wobble-free connection.
Once assembled, the model runs smoothly, clearly demonstrating how rotational motion is transformed into linear movement — just like in a real engine.
License
You may create derivative works based on this object, provided that all such derivative works are published exclusively on the MakerWorld platform and include proper attribution to the original creator. You may not share, upload, host, distribute, or publish this object—or any derivative work of this object—on any other digital platform, marketplace, or distribution channel. Commercial use of this object and any derivative works is strictly prohibited. This includes, but is not limited to, selling, renting, sublicensing, or using the object in any context in which you receive monetary compensation or other financial benefits.
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