• June 21, 2024
  • Shatou, Changan, Dongguan, CN
Important factors to consider in 3D printing

Important factors to consider in 3D printing?

In order to achieve the ideal balance when it comes to 3D printing, it’s important to take into account several key factors, including material, thickness, size, orientation, and material selection. Each of these elements can have an impact on the overall functionality and appearance of your creations.

1. Material selection

Various 3D printing methods are suitable for various material types, including plastics, metals, ceramics, etc. When choosing the proper material, it’s important to consider the object’s intended application.

2. Selection of printing technology

There are different types of 3D printing technologies that have unique advantages, drawbacks, and areas of use. Fused Deposition Modeling (FDM) technology is appropriate for quickly printing prototypes, while Lithography-based Stereolithography (SLA) is perfect for printing high-precision models.

3. Proper design and modeling

Prior to 3D printing, it is essential to have 3D modeling and design to achieve the best results. Accurate modeling and proper design can enhance the functionality of the object and improve print results.

4. Printing parameters

Identify the printing settings that can impact the quality and duration of printing, such as print speed, layer thickness, and infill density.

5. Proper support structures

To ensure good quality 3D prints, it may be necessary to use support structures. It is important to think about adding the appropriate supports for parts that are sloped or that overhang during printing.

6. Post-processing and surface treatment

After printing, it may be necessary to do additional processing such as sanding, painting, or polishing to improve the texture and appearance according to the specifications.

7. Appropriate cost and time

The selection of the printing method should take into account the impact of various factors such as materials, printing techniques, and printing parameters on both the cost and printing time. It is important to choose the most cost-effective and time-efficient method, while still meeting the required printing quality standards.

8. Appropriate equipment

Various 3D printers have varying limitations on their construction space, and it’s vital to select the right equipment according to the desired size of the printed object.

9. Machine maintenance and maintenance

Regular upkeep and maintenance are crucial for 3D printers to function smoothly and maintain high printing standards.

10. Special needs and considerations

When dealing with special needs, such as in the medical or aviation fields, it is important to take into account specific certifications, biocompatibility, and safety factors.

11. Dimensions of wall thickness and groove width

If the thickness of the wall, width of the groove, and size are greater than 0.5mm, it is not required to print the thread. It is advisable to tap the thread instead of using the 3D printing method for internal and external threads.

12. Risk of deformation

After 3D printing metal, it is sintered at high temperatures. Due to the effect of stress, some slender parts, thin-walled parts, shell parts, and other structures may be deformed. The benefit of metal printing is that it can form complex parts in one step, but the precision and surface quality is not as good as CNC machining.

13. Tolerance

Metal printers have high accuracy in both scanning and printing with a tolerance of less than 0.05mm. However, subjecting products to high-temperature sintering causes an increase in tolerance due to thermal expansion and contraction. For products smaller than 50mm, the printing tolerance is +/-0.1mm, which is relatively large.

The printing tolerance for larger products depends on the drawings, typically 0.1% of its length. When precision is necessary, 2D drawings with specific tolerance requirements must be provided, or processing allowance should be left beforehand and accuracy enhanced through secondary processing.

14. Appearance

The 3D-printed product has a surface roughness of Ra7-16, However, after undergoing the standard sandblasting treatment, the surface’s roughness is below that of the CNC processing level. This may be due to unclean support interfaces or traces of leftover polishing either from polished or electroplated parts, which could have left grit residue on supporting surfaces.

The finishing process for metal 3D printing materials is similar to that of traditional materials, and additional processing can be performed. However, when aluminum alloy materials undergo oxidation treatment, they can only be subjected to sub-black oxidation, which produces a weaker result compared to parts that were processed with CNC.


By carefully considering each of these factors, you can create 3D prints that not only meet your needs but also look great and function as intended. Whether you’re working on a small-scale project or a larger one, taking the time to think about these factors can help you achieve the results you’re looking for.

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