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Silent Air Compressor Built with 3D printed Parts

April 16, 2024

In the domain of 3D printing, the allure of printing everything can sometimes overshadow the importance of traditional machining. Recognizing this, Diffraction Limited has introduced a semi-printed silent air compressor that strikes a balance between innovation and practicality.

At the heart of this compressor’s design lies a thoughtful combination of 3D printed and machined components. By strategically utilizing plastic parts, the compressor achieves a remarkable level of quietness, a crucial factor in environments where noise can be disruptive.

Silent Air Compressor Built with 3D printed Parts
The air compressor features many 3D printed parts. (Image Credit: Diffraction Limited/Hackaday)

The design philosophy extends to the choice of materials and construction methods. While the body and piston arms are primarily 3D printed, the critical components, such as the pistons and cylinders, are machined from durable materials like Delrin and metal tubing. This hybrid approach ensures both structural integrity and smooth functionality.

One notable feature is the piston design, which eschews traditional wrist pins in favor of a direct attachment to the piston arms. This unique configuration, coupled with carefully engineered seals, allows for efficient air compression while minimizing noise and vibration.

Powered by a NEMA23-frame BLDC motor, the compressor delivers impressive performance at low speeds, reaching pressures of up to 150 PSI. Moreover, its split crankcase design simplifies maintenance and provides an opportunity to showcase the inner workings of the device.

While the 3D printing community has seen various attempts at compressor designs, this creation stands out for its meticulous attention to detail and practicality. By embracing both additive and subtractive manufacturing techniques, it represents a significant step forward in enhancing the capabilities of 3D printing setups.

Source: hackaday.com

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About the author | Phillip Keane
Phillip is an aerospace engineer from UK. He is a graduate of Coventry University (UK), International Space University (France) and Nanyang Technological University (Singapore), where he studied Advanced Manufacturing at the Singapore Centre for 3D Printing.
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