FDM 3D Functional Parts
Shenzhen JR Precision Technology Co., Ltd. is one of the leading manufacturers and suppliers of fdm 3d functional parts in China, featured by quality products and good price. If you're going to buy advanced fdm 3d functional parts made in China, welcome to get quotation from our factory. Customized orders are welcome.
Multiple Material Options
Material selection determines the performance of FDM functional parts. We offer a range of engineering-grade materials, each with documented properties:
PA Nylon (PA12, PA6-GF/CF Reinforced): PA12 offers tensile strength of approximately 40-50 MPa (XY direction) and heat deflection temperature (HDT) around 90-95°C. Carbon fiber reinforced PA12-CF reaches over 70 MPa with higher stiffness. PA6-GF/CF versions deliver 70-80+ MPa tensile strength and HDT up to 150-200°C or higher. These materials excel in wear resistance and fatigue performance, making them suitable for gears, bearings, and dynamic components.
PC (Polycarbonate): Tensile strength of 60-70 MPa, outstanding impact resistance (Izod notched impact often exceeding 600 J/m), and HDT of 130-140°C (0.45 MPa). Ideal for housings, brackets, and protective parts that must endure impacts or moderate-high temperatures.
PETG: Tensile strength of 45-53 MPa, excellent toughness, and strong chemical resistance to acids, bases, and some solvents. Its ease of printing and partial transparency make it suitable for containers, covers, and general functional parts.
ABS: A versatile engineering plastic with 35-45 MPa tensile strength and HDT of 90-100°C. Well-balanced properties make it suitable for prototypes, general enclosures, and non-critical structural components.
TPU: Flexible material with Shore hardness from 70A to 95A, perfect for cushioning, sealing, flexible clamps, sheaths, and vibration-damping parts.
High-Performance Materials (PEEK & PEI/ULTRAM): PEEK offers continuous use temperatures up to 250-260°C with excellent chemical and wear resistance. PEI (ULTEM) provides HDT exceeding 200°C and meets aviation FST standards. These materials are ideal for aerospace-grade lightweight structures, high-temperature fixtures, and extreme environment applications.
We recommend materials based on your specific operating conditions-load type, temperature, chemical exposure, and budget.
Multiple File Formats Supported
We accept all mainstream CAD/CAM formats, including STL, STEP, IGES, OBJ, and 3MF.
STEP/IGES files preserve precise geometry, assembly features, and dimensional tolerances-preferred for engineering-grade functional parts. STL/OBJ work well for complex organic surfaces or scan data, while 3MF supports color, material, and print settings.
No matter which format you provide, we perform professional model checks, repairs, and optimizations. Typical achievable tolerance is ±0.1-0.3 mm. If you don't have CAD files, we can create or reverse-engineer the model from sketches, photos, physical samples, or detailed descriptions.
Surface Treatment Processes
FDM parts naturally show layer lines. We offer multiple post-processing options to improve appearance, performance, and durability.
Sandblasting effectively removes visible layers on materials like PA and ABS, creating a uniform matte finish that improves both feel and coating adhesion. For ABS and certain PA grades, vapor smoothing can significantly reduce roughness for better sealing performance. We also provide mechanical polishing for precision surfaces, dyeing, protective coatings, and electroplating where needed.
The best choice depends on your priorities-whether durability, sealing, or visual quality.
Application Industries
Different sectors have unique demands, and FDM shines where traditional manufacturing is too slow or expensive.
In industrial automation, we regularly print custom robot grippers and assembly fixtures that must survive thousands of cycles. One client reduced their fixture lead time from weeks to just days while cutting weight by 40% through optimized internal lattice structures.
For electronics and communications equipment, PC and PETG enclosures protect sensitive components from impacts and heat. We have helped manufacturers develop cable management solutions and device housings that integrate perfectly with existing assemblies.
In non-implantable medical devices, cleanability and dimensional stability matter most. PETG and PC-ISO parts are popular for testing fixtures and equipment brackets, allowing hospitals and equipment makers to iterate quickly on small-batch custom tools.
Automotive teams use our ABS and PC parts for interior brackets and validation jigs during prototype phases. This approach lets them test fit and function long before hard tooling is ready.
In aerospace, PEEK and ULTEM components help achieve weight savings in non-critical cabin parts and high-temperature tooling. These materials have supported projects requiring strict FST compliance and thermal performance.
FAQ
Q: How do I choose the right material?
A: Tell us the operating temperature, expected loads, and environment (e.g., exposure to chemicals or oils). For high-heat, high-strength needs we often recommend PA-CF or PEEK. For general use, PC or PETG usually strikes the best balance. We review each project individually rather than offering generic suggestions.
Q: What accuracy can you actually achieve?
A: Standard tolerance is ±0.1-0.3 mm. On critical features we can tighten this further with proper orientation and post-processing. We always discuss and confirm key dimensions before printing.
Q: What if I only have sketches or a physical sample?
A: We handle this frequently. Many customers send photos, hand drawings, or existing parts. Our team can create a usable 3D model and confirm details with you before production.
Q: Which surface finish works best?
A: It depends on the part's function. Sandblasting is our most common request for industrial fixtures because it removes layer lines and improves coating performance. Vapor smoothing is preferred when sealing or a smoother aesthetic is needed. We'll advise based on your priorities.
Q: When is FDM the better choice compared to SLA or SLS?
A: Choose FDM when you need functional toughness, larger build sizes, or a wide selection of engineering plastics. We've seen many projects switch to FDM after SLA parts proved too brittle in real use, or SLS became cost-prohibitive for small runs.
Q: How do you ensure quality?
A: Every order goes through dimensional verification, visual inspection, and basic functional checks such as assembly testing. For critical projects we provide full inspection reports. Typical lead time for functional parts is 3–7 days depending on complexity and material.
Q: Are your materials compliant with industry standards?
A: We use RoHS-compliant materials as standard. High-performance options like ULTEM have documented references for aviation-related requirements.
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