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I will create mechanical cad models and step files
Changzheng O
About this gig
I create professional mechanical CAD models and STEP files for manufacturing using Siemens NX, Catia V5 or SolidWorks. I design CNC-ready parts, assemblies, and practical engineering solutions based on your ideas, drawings, or existing references.
Delivery style preference
Please inform the freelancer of any preferences or concerns regarding the use of AI tools in the completion and/or delivery of your order.
Get to know Changzheng O
Changzheng O
Mechanical CAD Designer
- FromChina
- Member sinceSep 2026
Languages
Chinese, English
I’m Changzheng, a mechanical CAD designer specializing in manufacturing-oriented design, CNC-ready modeling, and reverse engineering.
I use Siemens NX and SolidWorks to create accurate 3D models, assemblies, and production-ready CAD files.
My focus is practical mechanical design that can move from concept to manufacturing, with attention to accuracy, functionality, and fabrication requirements.
My Portfolio
Other Industrial & Product Design Services I Offer
FAQ
What information do you need before starting the project?
Please provide drawings, sketches, dimensions, reference images, or existing models. Any manufacturing requirements are also helpful.
Can you provide STEP files and native CAD files?
Yes, I can provide STEP files. Native CAD files from Siemens NX or SolidWorks are available depending on the selected package.
Can you design parts for CNC manufacturing?
Yes. I focus on manufacturing-oriented CAD design and consider machining requirements during the modeling process.
Can you create technical drawings for manufacturing?
Yes. Technical drawings with dimensions and necessary details can be provided as an additional service or included in selected packages.
Can you reverse engineer an existing part?
Yes. I can recreate CAD models from existing parts, measurements, images, or reference data.
