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Overview
Our FDM 3D Printing Service
What is FDM
The full name of FDM is Fused Deposition Modeling, which is the simplest and most commonly used 3D printing method, mainly used to print thermoplastic polymers.
How Does FDM Work?

The filamentous hot-melt material is heated and melted, and extruded through a nozzle with a fine nozzle. After the hot melt material is melted, it is ejected from the nozzle, deposited on the panel or the previous layer of solidified material, and starts to solidify after cooling, and the final product is formed through the accumulation of layers of materials.

Features of FDM Technology
Advantages
Easy and fast
The prototype is directly made from the CAD digital model, the processing speed is fast, the product production cycle is short, and no cutting tools and molds are required.
Prototype with complex structures
It can process prototypes and molds with complex structures or shapes that are difficult to form using traditional means. Provide samples for experiments, and can verify and check the results of computer simulation calculations.
Remote control
It can be operated online and remotely controlled, which is conducive to the automation of production.
Drawbacks
Time consuming
The nozzle adopts a mechanical structure, and the printing speed is relatively slow, especially when printing large-scale models or printing in batches.
Material defect
The dimensional accuracy is poor, the surface is relatively rough, and there is a clear layer, which is not suitable for printing assemblies with high dimensional accuracy requirements.
Available materials for FDM 3D Printing
Here is a list of our standard 3D printing materials available through our online platform.
FDM 3D Printing Plastics
PLA ABS PETG TPU PC other
PLA ABS PETG TPU(FDM) PC (Polycarbonate) ASA
PLA-CF Stratasys ABS-ESD7 PETG-CF PEEK
PPS-CF
Custom Material
The materials available on the online system may not be exhaustive of all materials available on the market. If the materials you need are not listed on the order page, please select "custom" under the material menu, and our engineers will review and purchase.
Our standard surface finishes
Our FDM 3D printing capability
Requirement Specification
Maximum build size 600 x 500 x 500 mm
Minimum wall thickness 1.5mm
Layer height 100-300 μm
Infill 20-100%
Tolerances
Length(L) Metric units
L≤100mm ±0.2mm
L>100mm ±0.2%*L
3D Printing Design Guidelines
We have summarized recommended and technically feasible values for the most common features encountered in 3D printed parts.
1. Wall thickness
The wall thickness directly determines the strength of the printed object, and also determines whether the model can be printed.
Once the model is printed, it also goes through support removal, grinding and sandblasting, which determine the minimum wall thickness for different materials. The model is printable only when the wall thickness meets the minimum requirement.
Process 5*5mm 10*10mm 50*50mm 100*100mm 200*200mm
SLA 0.5mm 0.8mm 1mm 1.2mm 1.5mm
DLP 0.5mm 0.8mm 1mm 1.2mm 1.5mm
SLS 0.8mm 1mm 1.2mm 1.5mm 2.0mm
MJF 0.8mm 1mm 1.2mm 1.5mm 2.0mm
SLM 1mm 1.2mm 1.5mm 2.0mm 2.5mm
FDM 1mm 1.2mm 1.5mm 2.0mm 2.5mm
2. Embossed and engraved detail
As the height or depth of detail is less than the minimum detail requirements, it will not be able to print accurately, can not be polished, paint and other post-processing. It is recommended that you increase the height/depth, or remove the section.
Process Min embossed detail Min engraved detail
SLA 0.5mm 0.5mm
DLP 0.5mm 0.5mm
SLS 0.8mm 0.8mm
MJF 0.8mm 0.8mm
SLM 1mm 1mm
FDM 1mm 1mm
3. Threads and screws
Pitch refers to the axial distance between the corresponding points of two adjacent teeth on the thread. Profile angle refers to the angle between the two sides of the whorl profile. Your design needs to meet the requirements of minimum pitch:0.6mm and minimum profile angle:20°
4. Hole diameter
The following is the minimum diameter can be achieved.
Process Min diameter
SLA 0.8mm
DLP 0.8mm
SLS 1.5mm
MJF 1.5mm
SLM 1.5mm
FDM 1.5mm
5. Sharp surfaces
When the wall thickness is very small, models with sharp surfaces can be easily damaged during support removal, grinding, packaging, and transportation. If sharp surfaces exist, the angle should be greater than 20 degrees.
6. Clearance
Parts clearance refers to the distance between any two parts, thin wall or column, as shown above. The min clearance is 1mm. When the clearance is small, it will not be able to remove the supporting material. It is recommended that you increase the clearance size or choose other materials required by the clearance. If the independence of the two parts is not important, it is recommended that you merge them into one part.

Assembly clearance refers to the distance between any two parts to be assembled, as shown above. The min clearance is 0.2mm.
FAQ's
What is the maximum build size for your FDM 3D printing?

The maximum build size for our FDM 3D printing is 300×250×300mm. It can meet the needs of most functional parts, and we can provide splicing solutions for oversized parts.

What is the minimum wall thickness required for FDM printed parts?

The minimum wall thickness for FDM printing is 1.5mm, and the thinnest part of the whole model should not be less than 0.8mm to ensure printability.

All design files must have no broken holes. Keep main wall thickness above 1.2 mm, and ensure the thinnest feature is at least 0.8 mm. Thinner structures will bring printing failure and post-processing risks.

What layer height options do you offer for FDM 3D printing?

We provide FDM printing with a layer height range of 100-300 μm, which can be adjusted according to your requirements for printing speed and surface detail.

What are the dimensional tolerances for FDM 3D printed parts?

The tolerance is ±0.2mm for parts with length ≤100mm; for parts with length >100mm, the tolerance is ±0.2% of the total length (±0.2%*L).


What infill densities are available for FDM printing?

Our FDM printers support infill from 5% to 100%.

  • 5–20%: Lightweight visual prototypes
  • 20–50%: Standard functional parts (most common)
  • 60–100%: High‑strength / load‑bearing componentsWe recommend densities based on your application.
What materials do you offer for FDM 3D printing?

Our standard FDM printing materials include PLA, PLA-CF, ABS, Stratasys ABS-ESD7, PETG, PETG-CF, TPU, PC, as well as high-performance materials such as ASA, PEEK, PPS-CF. Custom materials are also available upon request.

We mainly use PLA, ABS, PC and other materials for FDM printing. Among them, PLA is suitable for general prototypes, ABS has better impact resistance, and PC is used for functional parts that require high strength.

What surface finish options are provided for FDM printed parts?

The surface of FDM parts can be polished, sandblasted and painted. The standard surface roughness is Ra≤1.6μm, which can meet the needs of general assembly and appearance display.

some high-level surface treatments are not suitable for most FDM materials due to layer lines and material properties. Polishing, mirror finishing and hard anodizing cannot be applied to common FDM plastics to avoid damage and poor adhesion.

What is the minimum hole diameter for FDM printing?
  • Standard 0.4mm nozzle: 1.0mm (reliable, round, fully formed)
  • High-precision 0.2mm nozzle: 0.6mm (for fine details & small bores)
  • Larger 0.6/0.8mm nozzles: 1.5mm minimum
  • We guarantee functional, smooth holes at these sizes.
What are the minimum embossed and engraved details for FDM printing?

Standard 0.4mm nozzle (most common):

  • Embossed (raised): min. 0.8mm width / 0.5mm height
  • Engraved (recessed): min. 0.8mm width / 0.5mm depth
  • High-precision 0.2mm nozzle:
  • Min. 0.5mm width / 0.4mm height/depth for fine details
  • Larger 0.6/0.8mm nozzles (fast printing): min. 1.0mm

Smaller details risk blurring or incomplete formation.

What are the requirements for threads and screws in FDM printing design?

Standard metric threads starting from M3 can be printed stably. We recommend a minimum thread pitch of 0.5mm and a thread angle larger than 30°, ensuring smooth assembly and durable repeated use.