8 Types of 3D Printing Processes
From Rapid Prototyping to Final Production. Understand the technologies transforming automotive, aerospace, and healthcare industries.
What is Additive Manufacturing?
3D printing, also known as additive manufacturing, is a process where digital models are transformed into three-dimensional objects by layering materials one layer at a time. This technology allows for the creation of complex and customized parts that would be difficult or impossible to produce using traditional manufacturing methods.
Widely used across automotive, aerospace, and consumer product industries, 3D printing is the gold standard for rapidly prototyping designs before committing to mass production processes like Sheet Metal Fabrication.
Common 3D Printing Technologies
Choose the right method for your specific material and accuracy needs.
Stereolithography (SLA)
One of the original methods. Uses a UV laser to cure liquid resin layer-by-layer.
- Smooth surface finish
- High resolution
- Best for: Detailed prototypes
Selective Laser Sintering (SLS)
Uses a high-powered laser to sinter powdered materials (typically nylon) into solid structures.
- No support structures needed
- High durability
- Best for: Functional parts
Fused Deposition Modeling (FDM)
Extrudes heated thermoplastic filament through a nozzle. The most cost-effective method.
- Affordable & Accessible
- Rougher surface finish
- Best for: Concept models & Jigs
Digital Light Process (DLP)
Similar to SLA but uses a digital light projector screen to cure entire layers at once.
- Faster build times
- High detail
- Best for: Rapid low-volume runs
Multi Jet Fusion (MJF)
Uses an inkjet array to apply fusing agents over a powder bed, fused by heat.
- Consistent mechanical properties
- High precision
- Best for: Strong functional parts
PolyJet Printing
Jets liquid photopolymers onto a build tray. Allows multi-material and full-color printing.
- Multi-color capabilities
- Overmold prototypes
- Best for: Realistic visual models
Direct Metal Laser Sintering
Uses a laser to sinter powdered metal into solid parts. Creates high-density metal components.
- High strength & density
- Complex internal structures
- Best for: Aerospace & Medical
Electron Beam Melting
Utilizes an electron beam in a vacuum to melt metal powder at high temperatures.
- Eliminates residual stress
- Superior material integrity
- Best for: High-performance parts
Comparison Guide: Which Method is Right for You?
| Technology | Material Type | Key Advantage | Typical Application |
|---|---|---|---|
| FDM | Thermoplastics | Low Cost | Basic Prototyping |
| SLA / DLP | Resin | Smooth Surface | Visual Models, Jewelry |
| SLS / MJF | Nylon Powder | Functional Strength | End-use Parts, Jigs |
| DMLS / EBM | Metal Powder | Complex Geometries | Aerospace, Medical Implants |
From 3D Prototype to Final Metal Product
3D printing is invaluable for testing and developing components. But when it's time for full-scale production, durability, or conductivity, nothing beats precision Sheet Metal.
Tong Lay Doo ensures a seamless transition. Once you have your prototype, partner with us for high-quality sheet metal fabrication services. We deliver precision forming, laser cutting, and comprehensive finishing.
Why Partner with TLD?
- Certified Expertise
- ISO 9001 Quality
- Seamless Scaling
- Advanced Laser Cutting
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