3D printing can be used to create objects with moving parts or mechanisms.

Can 3D printing be used to create objects with moving parts or mechanisms?

There are several 3D printing technologies that can produce objects with moving parts, including Fused Deposition Modeling (FDM), Stereolithography (SLA), and Selective Laser Sintering (SLS).

In FDM, the printer extrudes melted plastic filament to build up the object layer by layer. The layers are fused together as they are printed, which allows the printer to create objects with simple moving parts, such as hinges and gears.

SLA uses a laser to cure a liquid resin, which solidifies layer by layer to create the object. SLA prints can be highly detailed and have a smooth finish, which makes them well-suited for creating objects with moving parts that require precise tolerances.

SLS uses a laser to sinter (fuse) powdered materials together to build the object layer by layer. SLS is capable of printing objects with complex shapes and moving parts, as the printer can create voids or hollow spaces within the object.

It is worth noting that the complexity and feasibility of creating objects with moving parts or mechanisms using 3D printing will depend on the specific 3D printing technology being used, as well as the design of the object itself.

Technical examples

Here are some technical details and examples of how 3D printing can be used to create objects with moving parts or mechanisms:

1. Fused Deposition Modeling (FDM):

– FDM 3D printers build objects by extruding melted plastic filament layer by layer.
The plastic used in FDM printing is relatively strong and durable, but also somewhat brittle, which can limit the types of moving parts that can be created using this technology.
– FDM printers can create objects with simple moving parts, such as hinges and gears. These parts can be printed in a single piece, or they can be printed separately and then assembled.

An example of an object with moving parts created using FDM printing is a toy car with working wheels and steering.

2. Stereolithography (SLA):

– SLA 3D printers use a laser to cure a liquid resin layer by layer, creating a solid object.
– SLA prints are highly detailed and have a smooth finish, which makes them well-suited for creating objects with moving parts that require precise tolerances.
– SLA prints can be brittle, so the design of the object and its moving parts will need to take this into account.

An example of an object with moving parts created using SLA printing is a watch with a working mechanical movement.

3. Selective Laser Sintering (SLS):

– SLS 3D printers use a laser to sinter (fuse) powdered materials together to build the object layer by layer.
– SLS is capable of printing objects with complex shapes and moving parts, as the printer can create voids or hollow spaces within the object.
– The materials used in SLS printing, such as nylon and polystyrene, are strong and durable, which makes them well-suited for creating objects with moving parts that will be subjected to stress or wear.
– An example of an object with moving parts created using SLS printing is a drone with working propellers and motors.

It’s worth noting that 3D printing can also be used to create objects that have moving parts or mechanisms that are added after the printing process. For example, a 3D printed object could be designed with holes or slots that allow for the insertion of standard mechanical components, such as bearings or springs.

Frequently asked 3D printing questions: this post is one in a series of posts that aims to provide answers to some of the most popular questions about 3D printing.


I absolutely love 3D printing and love to write about it. When I first learned about this technology, I was immediately captivated by the ability to create physical objects from digital models. I’m always looking for ways to stay up-to-date on the latest 3D printing technologies and trends, and I love sharing what I’ve learned with others. Writing about 3D printing allows me to express my enthusiasm for this field and help others gain a deeper understanding of how it works and what it can be used for.

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