Shock absorbers are mechanical devices that are quite common, important, and often overlooked. They rely primarily on converting kinetic energy into another form of energy (usually heat) to absorb shock. Shock absorbers are widely used in a variety of mechanical devices and equipment, such as relying on shock absorbers, we can comfortably sit on a moving car. Recently, it has been used by a fever-grade 3D printing enthusiast on 3D printers to improve its printing accuracy and reduce noise.

The 3D printing fan is called Simon Chan, who works as an IT manager and is obsessed with 3D printing in his spare time. His 3D printer runs almost day and night. However, he has recently encountered a problem.

“Although I put a foam pad under the 3D printer, the vibration generated by the machine even makes the cabinet below it creak.” Simon Chan said, “Sometimes, this low-frequency vibration is below two floors of my apartment building. I can hear it. I have thought about putting a small carpet under the 3D printer or adding some isolation under the cabinet, but it still does not solve the problem. I am sure that many 3D enthusiasts have encountered similar situations."

So Simon decided to solve the problem once and for all, so he used SketchUp to design a device called "Printer Shock Absorbers." His design is based on a study he has done in the past to help earthquakes in buildings. He hopes to design a product that is both durable, easy to manufacture, and capable of supporting all 3D printers on the market.

“The shock absorber I designed was supported by 3D printed parts plus a tough extruder spring,” says Chan. “It works with any 3D printer, and users simply install them on the bottom of the machine or at the four corners of the bottom.”

These four small devices, each with five springs installed, are mounted separately under the four corners of the 3D printer. When the printer is running, the vibration caused by the rapid movement and direction change of the X/Y axis is effectively attenuated by four small devices, which avoids the generation of noise, and also solves the looseness of the components caused by long-term vibration of the machine and reduces the printing accuracy. The problem.

“This design allows 360 degrees of motion, and I can no longer feel the vibration of the desktop when the 3D printer is running,” Simon said.

In all, Simon spent about six hours printing ten parts using a Printrbot Simple Metal 1403 3D printer. He also generously put the design files of this 3D printer shock absorber on the Internet for free download by others (click here to download). In addition to the 3D printed parts, the necessary parts for making this shock absorber include a spring and 16 M3 * 8mm screws.

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