In today’s manufacturing landscape, the terms “3D printing” and “additive manufacturing” are often used interchangeably. But are they truly the same? While they share similarities, there are key distinctions between the two. This blog will help you understand the relationship between 3D printing and additive manufacturing and when to use each term.
What is 3D Printing?
3D printing refers to the process of creating a three-dimensional object from a digital model, such as a CAD (Computer-Aided Design) drawing. This technology has revolutionized how objects are designed and produced. The process involves slicing the digital model into thin layers, which the 3D printer then builds up layer by layer using various materials.
Here are some of the most widely used 3D printing technologies:
- Fused Deposition Modeling (FDM): This method extrudes thermoplastic filament to build an object layer by layer.
- Selective Laser Sintering (SLS): A polymer powder is preheated to its melting point and then selectively fused together by a CO2 laser to create a solid part.
- Stereolithography (SLA): In this process, a photosensitive liquid resin is solidified using an ultraviolet laser.
- PolyJet: This technology uses liquid photopolymers and builds parts by depositing ultrafine droplets onto a build platform.
3D printing is commonly associated with small-scale, one-off productions and is often used in prototype development or by hobbyists.
What is Additive Manufacturing?
Additive manufacturing (AM) encompasses 3D printing but goes beyond just the printing process. It refers to an entire industrial manufacturing process that includes not only the creation of objects but also several other essential steps. While 3D printers play a crucial role, additive manufacturing involves a broader, more complex workflow.
The additive manufacturing process can include:
- Modeling: Developing a digital design using CAD software.
- Material Traceability: Ensuring the materials used are tracked and meet quality standards.
- Workflow Management: Coordinating the various stages of production.
- Post-Processing: Finishing techniques such as painting, polishing, or heat treatments to enhance the final product.
- Quality and Inspection Systems: Rigorous checks to ensure that the final product meets all necessary specifications.
Additive manufacturing is typically used in large-scale or industrial applications, where precision, consistency, and scalability are crucial. This workflow can look vastly different than a typical small-scale 3D printing process.
Understanding the Difference
While 3D printing is a subset of additive manufacturing, not all 3D printing is considered additive manufacturing. The key difference lies in the scope and application. 3D printing usually refers to smaller-scale operations, often at the consumer or hobbyist level. In contrast, additive manufacturing refers to a comprehensive production process used in industrial settings.
Key Takeaways:
- 3D Printing: Ideal for small-scale, prototype, or hobbyist applications.
- Additive Manufacturing: Involves a full production workflow and is used in industrial and large-scale manufacturing contexts.
When choosing which term to use, consider the context. If you’re referring to a process with multiple steps in an industrial setting, “additive manufacturing” is the appropriate term. For smaller-scale or one-off productions, “3D printing” is more accurate.
By understanding these differences, you can better navigate the evolving landscape of modern manufacturing and use the right terminology for your needs.