I will create 3d cad models and manufacturing drawings

J
jaychang1
J
jaychang1
jay chang

About this gig

I will turn your sketch, PDF, reference image, existing CAD file, or product idea into an accurate 3D mechanical model and production-ready engineering drawings.


Services can include:

Parametric part modeling

3D CAD assemblies

Manufacturing drawings

Dimensions, tolerances, sections, and detail views

STEP, IGES, STL, DXF, DWG, and PDF exports

BOM preparation and design revisions

Basic DFM and assembly review


I have more than five years of mechanical design experience covering aerospace structures, automotive systems, UAVs, robotics, machined parts, plastic components, and complex assemblies. I work with CATIA V5, SolidWorks, Creo, Siemens NX, Fusion 360, and Onshape.


Please message me before ordering if your project contains multiple parts, complex surfaces, or a large assembly.

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 jay chang

jay chang

Born for Engineering Drawings

  • FromChina
  • Member sinceJul 2026
  • Avg. response time1 hour
  • Languages

    Chinese, English
I’m Jay, a mechanical design engineer with 5+ years of experience in aerospace structures, automotive systems, UAVs, and product development. I provide 3D CAD modeling, complex assembly design, manufacturing drawings, BOMs, DFM/DFA, reverse engineering, FEA, and prototype-to-production support. I work with CATIA V5, SolidWorks, Creo, Siemens NX, ANSYS, Abaqus, and HyperMesh. I can also help source suppliers, build prototypes, and coordinate manufacturing in China. Message me to discuss your part, assembly, or product idea.

My Portfolio

Other Industrial & Product Design Services I Offer