We create precise technical drawings and CAD models based on existing parts, samples, or finished components. This service is essential for manufacturing, spare part reproduction, modernization, and documentation of legacy equipment.

For complex geometries, we apply reverse engineering methods to accurately reconstruct components and ensure full compatibility with production requirements.

Applications and Use Cases

This service is widely used in industrial environments where original design data is missing or outdated.

Typical Applications

Reproduction of spare parts without existing drawings
Modernization of legacy machines and systems
Documentation of existing components
Optimization and redesign of parts
Integration into new or upgraded systems

Methods of Part Reconstruction

We select the most suitable method depending on geometry, size, and required accuracy—often combining multiple approaches.

Manual Measurement (Dimensioning)

Ideal for large, heavy, or simple parts
Suitable for flat or geometrically straightforward components
Efficient when 3D scanning is not practical

3D Scanning

Used for complex shapes and curved surfaces
High-precision data capture with professional scanning systems
Accurate reproduction of intricate geometries

Engineering Workflow

Our structured workflow ensures high accuracy and reliable results.

Process Steps

On-site measurement and inspection (if required)
Manual dimensioning of components
High-precision 3D scanning
Creation of parametric 3D CAD models
Model correction and optimization
Generation of production-ready drawings and documentation

Technical Documentation

All drawings and models are developed based on verified data and engineering requirements.

Documentation Includes

Accurate geometry based on validated measurements
Consideration of functional and operational requirements
Integration of manufacturing specifications
Output in standard formats (DXF, DWG, STEP, etc.)

The result is a complete, production-ready engineering dataset.

On-Site Measurement and Scanning

We offer on-site services for large, complex, or non-transportable components.

Service Area

Schaffhausen
Zurich
Aargau
Thurgau (Switzerland)

For other regions, qualified specialists can be arranged.

Requirements

The part must be accessible for measurement
Handling equipment (e.g., forklift or crane) may be required for large components

Quality Assurance

To ensure maximum accuracy, we apply a structured verification process.

Validation Methods

Direct validation
- Comparison of CAD models with the physical part (when available)
Indirect validation
- Detailed measurement sketches with duplicate dimensions
- Use of certified measuring tools

All work is performed by experienced engineers specialized in reverse engineering.

Scope of Services

We provide a full range of services related to part reconstruction and documentation.

Core Services

Creation of CAD drawings from physical parts
Reverse engineering of components and assemblies
3D scanning and digital reconstruction
Development of 3D models and technical documentation
Updating and optimization of existing designs
Preparation of manufacturing-ready drawings

Your Benefits

Working with Roltec ensures reliable and efficient results.

Key Benefits

Accurate reproduction of existing components
Fully editable and production-ready CAD data
Reduced risk of manufacturing errors
Efficient modernization of legacy parts
Professional engineering support throughout the process

Engineering Accuracy for Real Production

Our approach ensures that reconstructed components are not only geometrically accurate, but also optimized for manufacturing, assembly, and long-term operation.

Conclusion

Creating technical drawings from production parts is essential for maintaining and upgrading industrial systems. With advanced reverse engineering methods and strong engineering expertise, we deliver precise, reliable, and production-ready solutions for modern manufacturing.

Technical Drawing from Production Part