3D scanning is widely used in manufacturing, reverse engineering, product design, and quality inspection. By understanding the different 3D scanning types, businesses can choose the right technology, service, and output format for their specific needs. This guide explains the types of 3D scanning technologies, types of 3D scanning services, and commonly used 3D scan file types in a simple and practical way.
What is 3D Scanning?
3D scanning is the process of capturing the physical shape of an object or environment and converting it into a digital 3D model. The scanned data can be used for CAD design modeling, inspection, simulation, or 3D printing. Depending on the workflow, the final output is delivered in different 3D scan file types, such as point clouds, meshes, or CAD-ready formats.
Types of 3D Scanning Technologies
Structured Light Scanning
Structured light scanning uses projected light patterns to capture surface geometry with high accuracy. It is one of the most commonly used types of 3D scanning technology for small to medium-sized objects that require detailed surface data.
Laser Scanning
Laser scanning measures distances using laser beams and is suitable for both small components and large industrial objects. This technology is often used where durability, range, and reliability are required.
Photogrammetry
Photogrammetry creates 3D models using multiple photographs taken from different angles. It is a cost-effective option and works well for large objects, outdoor scanning, and situations where physical scanners are difficult to use.
Contact Scanning
Contact scanning uses a physical probe to touch the object and record precise measurements. Although slower, it offers very high accuracy and is often used in inspection and metrology applications.
These 3D scanning types are selected based on accuracy requirements, object size, and final application.
Types of 3D Scanning Services
Different projects require different 3D scanning types, depending on the purpose of the scan, required accuracy, and how the scanned data will be used. From simple digital capture to advanced engineering workflows, selecting the right service plays a key role in achieving accurate and usable results.
3D Scanning Service (Raw Data Capture)
A standard 3D scanning service focuses on capturing the physical geometry of an object and delivering raw scan data, usually in the form of point clouds or basic meshes. This service is ideal when the primary goal is to digitally document an object or prepare scan data for further processing by in-house teams.
This type of service is commonly used for:
Basic digital archiving
Visual reference models
Initial reverse engineering workflows
Mesh Processing Service
A mesh processing service converts raw scan data into clean, usable mesh models. The scan data is refined by removing noise, filling holes, and optimizing the mesh structure, making it suitable for visualization, simulation, or 3D printing.
This service is best suited for:
3D printing applications
Visual prototypes
Animation or rendering workflows
Scan-to-CAD Service
Scan-to-CAD is one of the most advanced 3D scanning types. It transforms scan data into fully editable, parametric CAD models that can be used directly in engineering and manufacturing environments.
This service is widely used for:
Reverse engineering of legacy parts
Product redesign and improvement
Manufacturing and tooling applications
Inspection & Analysis Service
An inspection and analysis service compares scanned data with existing CAD models or design specifications to verify accuracy and quality. This service is essential in industries where precision and compliance are critical.
Common use cases include:
Quality control and inspection
Dimensional analysis
Manufacturing verification
Choosing the Right Type of 3D Scanning Service
Choosing the correct type of 3D scanning service ensures better accuracy, reduced rework, and smoother integration into design or production workflows. Factors such as object complexity, required precision, final output format, and project timeline should always be considered before selecting a service.
Common 3D Scan File Types
Understanding 3D scan file types is essential for choosing the correct output format.
Point Cloud Files: Raw data containing millions of coordinate points captured by scanners.
Mesh Files: Formats like STL, OBJ, and PLY used for visualization, simulation, and 3D printing.
CAD & Surface Files: Formats such as STEP and IGES used for engineering-grade modeling and design modifications.
The right file type depends on whether the goal is visualization, editing, or manufacturing.
FAQs
What are the main 3D scanning types?
The main 3D scanning types include structured light scanning, laser scanning, photogrammetry, and contact scanning. Each method is suited for different accuracy levels, object sizes, and applications.
What are the most common types of 3D scanning technologies?
The most common 3D scanning types in technology are structured light and laser scanning, as they offer a strong balance between accuracy, speed, and versatility across industries.
What are the different types of 3D scanning services?
Types of 3D scanning services include basic 3D scanning, mesh generation, scan-to-CAD modeling, and inspection or metrology services, depending on project requirements.
What are the most used 3D scan file types?
The most commonly used 3D scan file types include point cloud formats, which store raw scan data captured by 3D scanners, and mesh files such as STL and OBJ, which are widely used for visualization and 3D printing. For engineering and manufacturing applications, CAD formats like STEP and IGES are preferred, as they allow precise editing, design modifications, and integration into CAD workflows.
How do I choose the right type of 3D scanning service?
Choosing from one of the best 3D scanning types depends on several factors, including the size and complexity of the object, the level of accuracy required, and how the scanned data will be used. Projects focused on visualization or 3D printing typically require mesh-based services, while engineering, inspection, and manufacturing applications benefit from scan-to-CAD or inspection-focused scanning services with precise output file formats.
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