Dongguan Xinjuexin Plastic Hardware Products Factory

Professional one-stop supplier of molds, plastic parts and metal parts, including rapid prototyping, mold making & on-demand production.

World-Class Injection Molding Services

Small and large scale injection molding Request an injection molding quote today.

Our Custom 3D Printing Services

Xinjuexin’s 3D printing services is ideal for rapid prototypes and intricate functional parts for larger-scale production. Our 3D printing shops are equipped with seasoned expert operators and the most advanced additive manufacturing technologies, covering four high-quality printing processes: Selective Laser Sintering, Stereolithography, HP Multi Jet Fusion, and Selective Laser Melting. With RapidDirect, expect rapid delivery of finely-produced, precise 3D printed prototypes and end-use parts, suitable for both small and extensive production needs.

Types of 3D printing

Various specialized techniques are available for 3D printing, each catering to different needs:

Fused Deposition Modeling (FDM)

This method constructs prototypes by layering thermoplastic filaments from the bottom up, using heat. FDM printers offer a wide range of material options, catering to both cost-effective and high-performance requirements.

Stereolithography (SLA)

Utilizing a UV laser to cure layers within a photo-reactive epoxy resin, SLA offers exceptional accuracy, making it ideal for engineers requiring intricate details and small features.

Selective Laser Sintering (SLS)

In SLS, a high-power laser fuses tiny polymer powder particles, enabling the creation of robust and complex parts. While not discussed in detail here, it's worth noting the diverse range of materials available for all types of additive manufacturing processes.

Fused Filament Fabrication (FFF)

FFF, an extrusion process, builds objects by depositing melted material layer-by-layer. Common thermoplastics used include ABS and Nylon, making FFF suitable for a wide array of applications.

Vacuum Casting

Offering a quick and cost-effective alternative to 3D printing, vacuum casting produces accurate representations of master models. A silicone rubber mold filled with polyurethane resin is placed in a vacuum, eliminating air bubbles and yielding precise results.

CNC Machining

As a subtractive manufacturing process, CNC involves fixturing a block of metal or plastic material inside a mill. Programmed with G-code, the CNC machine rapidly mills parts from the raw material block. It serves for both rapid prototyping and low-volume production of end-use components.

These specialized techniques provide a diverse toolbox for meeting various manufacturing needs, offering solutions ranging from rapid prototyping to production-grade parts.

3D Printing Mateirals

Our material selection includes plastic and metal options such as ABS, PA (nylon), aluminum and stainless steel for a variety of industrial 3D custom printing projects. If you have unique material requirements, feel free to let us know and we will be happy to provide you with the materials you need.

ABS and Resins

ABS is a top choice for 3D printing due to its strength, durability, and higher temperature resistance. Ideal for functional prototypes and complex designs, ABS ensures reliable performance and impressive finish.

Technology: SLA

Color: White, Beige, Black, Red, Semi-transparent


– ABS Photosensitive Resin
– High Temperature Resistant 70°C Photosensitive Resin
– Black Toughness 70°C Heat-Resistant Photosensitive Resin
– Semi-Transparent – Photosensitive Resin
White Tough Resin

PA (Nylon)

Nylon offers exceptional strength, flexibility, and abrasion resistance, making it ideal for small quantities of prototypes and durable end-use products. Its durability and adaptability ensure high-quality, long-lasting printing.

Technology: MJF, SLS

Color: Original color, gray-black,
black painted

Types: HP Nylon


Aluminum metal 3D printing, offers a unique blend of lightness and strength with exceptional thermal conductivity and resistance to corrosion, making it a top choice for high-precision, durable prints.

Technology: SLM

Color: Silvery Gray

Type: ALSI10MG Aluminum Alloy

Stainless Steel

Stainless steel offers unmatched strength, resistance to corrosion and heat, and durability. Ideal for industrial 3D applications, it ensures high-quality, and precise parts with excellent mechanical properties.

Technology: SLM

Color: Gray-black

Type: 316L Stainless Steel

3D Printing Surface Roughness

Check the specifics of surface roughness achievable with Xinjuexin’s custom 3D printing services. Our table below outlines the detailed roughness metrics for each printing technique, guiding your choice for optimal part texture and precision.

Printing Type Material Post-Printing Roughness Post-Processing Technology Roughness After Processing
SLA Photopolymer Resin Ra6.3 Polishing, plating Ra3.2
MJF Nylon Ra6.3 Polishing, plating Ra3.2
SLS White Nylon, Black Nylon, Glass-filled Nylon Ra6.3-Ra12.5 Polishing, plating Ra6.3
SLM Aluminum Alloy Ra6.3-Ra12.5 Polishing, plating Ra6.3
SL Stainless Steel Ra6.3-Ra12.5 Polishing, plating Ra6.3
Note: After post-processing, some materials can achieve a surface roughness between Ra1.6 and Ra3.2. The specific outcome depends on the customer’s requirements and the particular circumstances.

General Tolerances for 3D Printing

For linear dimensions that are printed without specified tolerances, our local 3D printing shops adhere to the GB 1804-2000 standard, applying and inspecting with a coarse accuracy level (Class C).

  Basic Size
Linear Dimensions ±0.2 to ±4 mm
Fillet Radius and Chamfer Height Dimensions ± 0.4 to ± 4 mm
Angular Dimensions ±1°30' to ±10'

For shape and position dimensions not noted tolerance, we follow the GB 1804-2000 L level for implementation and testing. Refer to the following table:

  Basic Length
Straightness and Flatness 0.1 to 1.6 mm
Verticality Tolerance 0.5 to 2 mm
The Degree of Symmetry 0.6 to 2 mm
Circular Runout Tolerance 0.5 mm

How RapidDirect Custom 3D Printing Works?

Send Design

Upload your 3D model file first. Our quoting system supports a wide range of file formats such as [.STP], [.STEP] or [.STL] to ensure compatibility and ease of use.


Quick Quote & DFM Analysis

Send it and receive an instant quote. Our engineers will perform a manufacturability analysis of your design to identify potential problems and optimize printing efficiency.


Material Selection

Choose from a variety of materials and finishes. Our team of experts can help you choose the option that best suits your project's specific needs while balancing cost, function and aesthetics.


Precision Printing

We use high resolution 3D printers to bring your designs to life. We always guarantee industry-leading standards to ensure that products are made with high precision and detail.


Quality Assurance (QA)

Every part undergoes rigorous inspection. Our quality control process includes dimensional accuracy checks and surface finish checks to ensure your parts meet exact specifications.


Secure Packaging and Delivery

Once the quality is approved, we will carefully package and ship your prints. We will provide fast and reliable delivery options.


3D Printing FAQs

1. What are your tolerances for 3D printing?

3D printing can achieve very high levels of accuracy. Our standard tolerance for 3D printing is ± 0.1mm. But this depends on your part complexity, you can upload your 2D design files and we will evaluate specific tolerances.

2. How long does it take to 3D print parts?

Some important factors, such as your part size, height, complexity and the printing technology used, will affect the printing time. At RapidDirect, we can complete 3D printing projects as fast as 1 day.

3. What’s the maximum size of the 3D prints?

The 3D prints we create will depend on the specification of the 3D printer you choose. We have a wide range of 3D printing machines, allowing us to print different sizes. Large format FDM 3D printers have a build area of up to 36 x 24 x 26 (inches). On the other hand, you can expect larger SLA printers to print up to 29 x 25 x 21 (inches). SLS unfilled has a 13 inches max dimension, while the glass-filled SLS machine can create prints of 26 x 15 x 23 (inches). The Industrial Polyjet printer has a build area of up to 19 x 15 x 7 (inches).

4. What file format do you accept?

The recommended file formats are STEP (.stp) and STL (.stl) . So if your file is in another format, it is best to convert it to STEP or STL.

5. How much does your 3D printing service cost?

Capital is a huge decider when deciding on the right 3D printing service. Therefore, it is important to know about several factors that can determine the amount of capital you spend printing or outsourcing your project, including chosen 3D printer, the size and design complexity of a model, the material used, and your part volume.