Reverse Engineering & Legacy CAD Services

Turn existing parts, outdated drawings, and incomplete CAD files into accurate, editable 3D models and manufacturing drawings.

Get A Quote

You provide the drawing. I build the model.

No engineering firm. No long-term contract. No need to hire another designer. Send me the
information you already have and I’ll tell you what it will cost.

Services

Reverse Engineering & Part Recreation


Recreate existing mechanical parts as accurate, editable 3D CAD models using available drawings, measurements, photos, and reference files. Ideal for obsolete components, replacement parts, and parts with missing or outdated CAD data.

2D-to-3D CAD Conversion


Convert existing 2D CAD drawings, PDFs, and scanned engineering drawings into editable 3D models. Provide agreed-upon formats such as STEP, along with native CAD files where appropriate.

Legacy CAD Repair & Modification


Update existing CAD models and engineering drawings, correct geometry, modify parts, and reconstruct incomplete or outdated design files.

Manufacturing Drawings & Documentation


Create clear, dimensioned engineering drawings from existing CAD models to support manufacturing, fabrication, and quoting, with tolerances and other details defined by the project requirements.

*CAD modeling services focus on translating existing concepts and designs into CAD. Engineering analysis, structural calculations, product certification, and professional engineering services are not included.

Who I Help

Manufacturers & Machine Shops

Get additional CAD support for replacement components, legacy drawings, manufacturing documentation, and existing-part updates without adding permanent staff.

Engineering & Design Firms

Outsource mechanical CAD modeling, drawing reconstruction, and revision work when internal resources are limited or project workloads increase.

Maintenance & Repair Businesses

Recreate existing components and develop usable CAD files when original drawings or 3D models are missing, outdated, or incomplete.

CAD Projects

Small to Medium Assemblies
Manual Clamp Assembly
Multi-part mechanical clamp assembly modeled in Fusion 360, including fasteners and constrained components to demonstrate functional movement and assembly structure.
Machine/Cast/Molded Parts
Machined Socket Joint
Parametric part modeled in Fusion 360 featuring a base with mounting holes connected to an upright boss with a larger central bore and smaller alignment holes and fillets.
Manufacturing Documentation
Wall Mounted Support Bracket
Manufacturing drawing derived from a 3D CAD model with clear dimensions, multiple orthographic views, and detailed annotations for accurate fabrication and shop use.
View Services

About Eric Sweet

Owner/Designer


I’m a mechanical CAD designer with a background in mechanical drafting, 3D modeling, assemblies, and manufacturing documentation.

I specialize in turning existing engineering information—such as legacy drawings, sketches, measurements, and reference files—into clean, accurate, editable CAD models. I also help businesses update existing designs, reconstruct outdated files, and prepare drawings for manufacturing and future revisions.

My experience includes automotive-related components, tooling, mechanical assemblies, and multiple CAD platforms. Combined with hands-on experience working with tools and fabrication, this helps me approach CAD with an understanding of how components are made, assembled, and used.

My goal is to provide practical, dependable CAD support that helps businesses get more value from their existing designs and documentation.

Software & Filetypes
Primary: Fusion 360
Experience: Catia V5, UGNX, Solidworks, AutoCad, Fusion 360 (automotive/mechanical background)
Deliverables: STEP, IGES, Native CAD files, PDF drawings (as needed)

Why Choose Eric Sweet CAD?

Clear, manufacturable CAD

Models created with prototyping, fabrication, and continued design work in mind.

Reliable
communication

Project scope, turnaround time, and deliverables are discussed clearly before work begins.

Flexible Project
support

Available for individual parts, assemblies, revisions, prototypes, and ongoing CAD needs.

Real-world fabrication experience

Hands-on experience with tools and fabrication helps ensure designs are practical to produce.

Need to Recreate or Update an Existing Part?

Whether you have an old engineering drawing, an outdated CAD file, or an existing component that needs to be modeled, I can help.
Send me the drawings, files, measurements, or reference information you have available. I’ll review your project and let you know how I can help.

734.656.8570
eric@ericsweetcad.com
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