3D Scanning VS. 3D Printing, The Difference
3D scanning and 3D printing may seem similar, but they have fundamental differences.
3D scanning involves capturing the shape and appearance of objects using sensors and converting them into digital models, whereas 3D printing is the process of creating three-dimensional objects from computer-generated models.
While both are based on the principle of additive manufacturing, they exhibit significant differences in their applications, advantages, and limitations.
Although integrated scanning and printing still face technological constraints, understanding the distinctions between them allows us to better harness their potential in fields such as healthcare and design.
3D Scanning
3D scanning, also known as 3D digitization, is the process of capturing real-world objects and converting them into virtual representations.
Industrial scanners are used to capture complete or partial scans of objects and reconstruct data to create digital models.
3D scanners find wide applications in fields such as automotive, aerospace, ship, rail, mechanical design and manufacturing. These devices are utilized not only for commercial purposes but also in university labs, art classrooms, and other settings.
There are two main types of 3D scanners: contact and non-contact.
Contact 3D scanning involves capturing the geometric shape of objects through physical contact with their surfaces, typically using probes mounted on arms.
Non-contact 3D scanning can be achieved through active or passive scanning methods. Passive scanners collect ambient radiation reflected from the object’s surface, while active scanners emit and collect radiation reflected from the object’s surface.
Designers often integrate 3D scanning with CAD modeling software to generate accurate 3D digital models that preserve the texture surface and dimensional accuracy of physical parts.
3D Printing
3D printing is capable of producing complex and customized objects by depositing material layers on a build platform. Materials range from plastics, metals, ceramics, resins to even biological tissues.
This process, also known as rapid prototyping, enables the rapid and cost-effective creation of prototypes and models.
To print an object, a digital model is required, which can be created using CAD software, downloaded from online platforms, or obtained through scanning existing objects.
Subsequently, software programs slice the digital model into thin layers, generating instructions for moving the print head and extruding materials. The printer then builds the object layer by layer according to these instructions until the final product is completed.
Advanced printing technologies and computer-aided manufacturing software bring digital representations into the tangible world.
This technology fundamentally transforms traditional manufacturing methods, allowing for the creation of objects with intricate, unseen details and providing advantages in producing custom projects. Whether creating scaled models or physical replicas, 3D printing can achieve it all.
The synergy between 3D scanning and 3D printing
The synergy between 3D scanning and 3D printing is remarkable, leveraging creativity and efficiency. 3D scanning captures real-world objects‘ shapes, sizes, textures, and colors, transforming them into precise 3D digital models.
This technology enables unprecedented documentation and preservation of objects, from cultural heritage to industrial parts.
Subsequently, utilizing 3D printing, these digital models can be physically reproduced by layering materials.
This manufacturing method not only replicates the details of digital models quickly and accurately but also allows for the creation of various complex geometries and internal structures, providing vast opportunities for innovation and customization.
Case Study: Scantech Assists in Reshaping Prosthetics for Patients
Scantech utilizes 3D printing and scanning technologies to assist in reshaping prosthetics in the medical field, providing more comfortable and personalized solutions for disabled individuals.
Case Background
A patient suffered severe lower limb injuries in a traffic accident, requiring amputation and the use of prosthetics. However, traditional prosthetic manufacturing methods failed to meet their personalized and comfort needs.
Solution
3D Scanning: Initially, the medical team scanned the patient’s residual limb using a 3D scanner to obtain accurate shape and size data, ensuring the subsequent prosthetic’s accuracy and fit.
Digital Modeling: Based on the scanned data, the technical team used CAD software for digital modeling, designing a prosthetic model that perfectly matched the patient’s residual limb shape.
Personalized Design: Customized design of the prosthetic’s shape, materials, and structure based on the patient’s individual needs and comfort requirements to ensure a high fit and comfort level.
3D Printing Manufacturing: Utilizing 3D printing technology to layer-by-layer print the designed prosthetic model. High-strength, lightweight materials are used to ensure the prosthetic’s structural stability and durability.
Fitting and Adjustment: After manufacturing, the patient undergoes fitting, and the medical team fine-tunes the prosthetic based on the patient’s feedback and adjustment needs to ensure comfort and fit.
Explore the World of 3D Technology with Scantech
3D printers and 3D scanners are crucial tools in the digital era, based on the principle of additive manufacturing, creating objects by stacking materials layer by layer.
Their applications are diverse, with advantages and limitations depending on the type, quality, and cost of the equipment.
These technologies are bringing new possibilities and opportunities to design, production, and consumption, profoundly transforming fields such as engineering, medicine, education, art, and entertainment.
At Scantech, we are passionate about harnessing the potential of 3D technology.
If you’re starting a 3D scanning project, we’re here to help. Please contact us through our contact page for more information about our services.
