• June 21, 2024
  • Shatou, Changan, Dongguan, CN
3d printed products

3D printed part finishing guidelines

In modern manufacturing, 3D printing technology has gradually become a mainstream production method. Its strength lies in the ability to manufacture complex parts quickly and can be customized as needed. However, the surface of 3D printed parts usually needs to be treated to meet specific requirements.

This article will introduce some common surface treatment methods for 3D printing parts to help readers better understand how to improve the quality and performance of parts.

3D printing parts surface treatment method

1. Sandpaper polishing

Use sandpaper of different roughness to polish the surface of the 3D printed part. Start with coarse sandpaper and gradually work your way up to finer sandpaper until you achieve a smooth surface.

2. Sanders and Grinding Wheels

Use a sander and grinding wheel to remove large bumps and surface irregularities. This method removes excess material quickly and results in a flatter surface.

3. Chemical treatment

Using specific chemicals can change the surface properties of 3D printed parts. Pickling, for example, removes roughness from the surface of a material, making it smoother.

4. Coating

Use special coatings to protect 3D printed parts and improve their appearance and performance. For example, spray coatings are used to increase the wear resistance and water resistance of parts.

5. Filling and repairing

For defective or damaged 3D printed parts, filling and repairing materials can be used to repair the surface. These materials can fill cracks and dents and restore the structural integrity of parts.

6. Lubricant

For 3D printed parts that require moving parts, an appropriate lubricant can be used to reduce friction and ensure smooth movement of the part.

7. Color treatment

Use special dyes or pigments to increase the color and appearance of 3D printed parts. This can be achieved by spraying, dipping or other staining methods.


Different 3D printing materials may require different surface treatments. Before any surface treatment, it should be fully understood and tested according to the characteristics and requirements of the printing material to avoid irreversible loss.


Surface treatment of 3D printed parts is critical to improving their quality and performance. Whether through traditional processing methods or using special chemical treatments, the appearance and function of 3D printed parts can be effectively improved. However, when choosing an appropriate surface treatment method, factors such as the characteristics of the material, the purpose of the part, and the cost of manufacturing need to be considered. Only by comprehensively considering these factors can the best surface treatment effect be achieved.

With the continuous development of 3D printing technology, it is believed that in the near future, more innovative surface treatment methods will appear to help the manufacturing industry realize more possibilities.

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