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Based on 501 client reviews
Gatot W.

Bandung, Indonesia

$15/hr
4.2
239 jobs

Need accurate CAD drawings that are ready for manufacturing—not just impressive 3D models? With over 10 years of professional experience, I help manufacturers, fabricators, engineers, and product developers transform ideas, sketches, PDFs, and existing designs into production-ready CAD models, fabrication drawings, DXF files, BOMs, and complete manufacturing documentation. Specializing in Autodesk Inventor, I create practical, manufacturable designs with clear dimensions, accurate assemblies, and well-structured documentation that helps reduce production errors, simplify fabrication, and keep projects moving efficiently from concept to production. Services • Mechanical & Structural 2D Drafting with AutoCad • 3D Part & Assembly Modeling • Product Design & Prototype Development • Sheet Metal Design, Flat Patterns & DXF Files for Laser Cutting • Fabrication, Workshop & Manufacturing Drawings • Assembly & Exploded Views • Bill of Materials (BOM) • CAD Conversion (PDF, Sketch, Image, or Existing Drawing to CAD) • Design Revisions & Engineering Changes • Photorealistic Product Rendering Software • Autodesk Inventor • AutoCAD • SolidWorks • AutoCAD Advance Steel • KeyShot Why Clients Choose Me ✔ 10+ years of professional CAD drafting and design experience ✔ Top Rated Plus Freelancer with a 99% Job Success Score ✔ Manufacturing-ready drawings with a strong focus on accuracy and practicality ✔ Meticulous attention to detail ✔ Responsive communication and reliable turnaround times ✔ Flexible and collaborative throughout the design process Client Feedback "Gatot is one of the top three easiest and most productive freelancers I've worked with on Upwork. I'm glad to have found him." "Professional through and through. Hired for multiple projects." "This is our first project with Gatot and he did excellent work. Very flexible with revisions." "Looking forward to working with you again on our next project!" Whether you need a single custom component, a complete sheet metal assembly, structural fabrication drawings, or a fully documented manufacturing package, I'm ready to help. Let's discuss your project and create accurate, efficient, and production-ready CAD solutions that are built for manufacturing.

  • Autodesk Inventor
  • SolidWorks
  • 3D Rendering
  • Manufacturing & Construction
  • Autodesk AutoCAD
  • 3D Modeling
  • CAD Conversion
  • CAD Drafting
  • 3D Drawing
  • Steel Detail Drawing
  • Drafting
  • Sheet Metal
  • 2D Design & Drawings
  • 2D Drafting
  • Prototype Model
Phuoc C.

Ho Chi Minh City, Vietnam

$12/hr
5.0
16 jobs

Need a production-ready CAD model or technical drawing? I help manufacturers, startups, and inventors transform sketches, PDFs, STL files, and existing parts into accurate 3D CAD models ready for manufacturing. I deliver clean, accurate, and easy-to-edit CAD models using Fusion 360, Autodesk Inventor, SolidWorks and AutoCAD. What I can help you with: ✔ Reverse Engineering (STL, Existing Parts → CAD) ✔ 3D Mechanical Part & Assembly Design ✔ 2D Manufacturing & Technical Drawings ✔ PDF / Sketch / Image to CAD ✔ STEP, IGES, STL File Conversion ✔ Product Design & Prototype Development ✔ CAD Model Modification Software • Autodesk Fusion 360 • Autodesk Inventor • AutoCAD Why clients work with me ✔ Production-ready CAD models ✔ Accurate dimensions and tolerances ✔ Fast communication ✔ On-time delivery ✔ Clean, organized CAD files If you're looking for a reliable mechanical CAD engineer who understands manufacturing requirements, I'd be happy to discuss your project.

  • Autodesk Inventor
  • 3D Modeling
  • Mechanical Engineering
  • Autodesk AutoCAD
  • Autodesk Fusion 360
  • Mechanical Design
  • Product Design
  • CAD
  • CAD Software
  • 3D Printer
  • 3D Printing
  • STL
  • STEP
  • Convert Experiences
  • CAD Conversion
  • 3D Image
  • IGES
  • 2D Drawing
  • 2D Design
  • SolidWorks
Renzy Roy A.

San Jose del Monte, Philippines

$8/hr
5.0
53 jobs

A Professional CAD Designer and Mechanical Design Expert⚙️ 📌 Services I offer: ✔2D & 3D CAD Modeling & Design ✔Design for 3D Printing ✔Mechanical Design for Fabrication ✔Product Design & Prototype ✔️MEPFS Design ✔️Assembly & Motion Simulations ✔️Design Optimization & Analysis ✔️CFD Fluid Flow & Thermal Analysis ✔️FEA Stress Analysis Tools I use: 🔹AutoCAD 🔹Revit 🔹Fusion 360 🔹Inventor 🔹Ansys 🔹Autodesk CFD I specialize in creating detailed designs and simulations to ensure optimal performance. I use industry-standard tools to deliver precise, innovative solutions tailored to your needs. Let’s work together to bring your ideas to life with precision and efficiency!🚀

  • Graphic Design
  • 3D Modeling
  • CAD
  • Autodesk Fusion 360
  • Computational Fluid Dynamics
Sameth S.

Panadura, Sri Lanka

$14/hr
5.0
22 jobs

Have a mechanical component, assembly, or product that needs to be properly designed and clearly documented? I can help with that. I'm Sameth, a Mechatronics Engineer based in Sri Lanka with 4 years of experience in mechanical design and CAD. I work with engineers, product designers, and small businesses to turn ideas and rough concepts into detailed, manufacturable designs. What I typically work on: 3D part and assembly modeling — designed with manufacturing in mind Technical drawings with tolerances and annotations, your supplier can work from Mechanism design, motion studies, and sheet metal components DFM reviews to catch potential issues before production 3D printing — prototypes and functional parts when needed, in FDM or SLA Tools I use: SolidWorks · Autodesk Inventor · Fusion 360 · AutoCAD I'm SolidWorks-certified, hold a diploma in AutoCAD, and take communication and accuracy seriously on every project — whether it's a single bracket or a full product assembly. Feel free to message me with your project details, and we can take it from there.

  • Autodesk Inventor
  • 3D Design
  • SolidWorks
  • 3D Modeling
  • Autodesk AutoCAD
  • CAD
  • Autodesk Fusion 360
  • CAD & CAM Software
  • 2D Drafting
  • 2D Design & Drawings
  • 3D Drawing
  • Mechanical Design
  • Product Design
  • 3D Printing
  • Floor Plan Design
Haris A.

Lahore, Pakistan

$19/hr
5.0
89 jobs

ONLY looking for potential ongoing regular work, discounted rate for more than 20 hours per week 🔩 SHEET METAL DESIGN & FABRICATION (SolidWorks / Autodesk Inventor Expert) ✔ Flat pattern development and DXF output for CNC cutting ✔ Sheet metal part design with bend reliefs, tabs, and slots ✔ BOM automation using SolidWorks macros ✔ DXF + PDF batch outputs for production ✔ Material optimization and nesting ✔ Enclosures and mechanical assemblies with strong DFM/DFA focus 🏗️ STRUCTURAL STEEL DETAILING, TAKEOFFS & PREFAB CONSTRUCTION (Tekla Structures, Inventor Frame Generator, SolidWorks Weldments) ✔ Structural steel shop, fabrication, GA, assembly and erection drawings ✔ Steel quantity takeoffs, Material Take-Offs (MTO), Bills of Materials (BOM) and procurement schedules ✔ Architectural steel takeoffs including staircases, handrails, balustrades, guardrails and miscellaneous metals ✔ Primary and secondary steel structure detailing ✔ Stairways, balustrades, handrails, fences, gates and pergolas ✔ Curtain wall, cladding and façade shop drawings ✔ GRC and GRP panel detailing with mounting hardware ✔ Planter boxes, flashing details, drop ceilings, bulkheads and aluminium panels ✔ Panelized wall and roof systems for modular and prefabricated buildings ✔ Structural sub-assemblies and approval drawings ✔ Foundation layouts, anchor bolt plans and connection detailing (Aligned with AS 1170 / AS 4100 upon request) 🪚 JOINERY & FIT-OUT DRAFTING (SWOOD, AutoCAD, SolidWorks) ✔ Custom furniture CAD for manufacture ✔ Parametric cabinetry and joinery modeling ✔ Nesting and cut-list preparation ✔ DXF output for CNC routing ✔ Exploded views for fit-out and installation teams ✔ Door, window and frame detailing from architectural specifications ✔ Retail fit-out and interior millwork detailing 🎯 Industries I Work With • Structural steel fabricators • Façade contractors and curtain wall manufacturers • Modular and prefabricated construction companies • Architectural steel fabricators • Sheet metal fabrication shops • Joinery and furniture manufacturers • GRC / GRP cladding manufacturers 🧰 CAD & Design Software Proficiency • Tekla Structures • SolidWorks (Sheet Metal, Weldments, SWOOD) • Autodesk Inventor (Sheet Metal, Frame Generator) • SWOOD • CATIA • AutoCAD • KeyShot • Geomagic Design X 📈 Why Clients Choose Me ✔ Top Rated Plus on Upwork | 100% Job Success ✔ Strong DFM/DFA and Design for Manufacture expertise ✔ Production-ready shop drawings and fabrication documentation ✔ Structural steel detailing, steel takeoffs and estimating support ✔ Clear communication and proactive technical problem solving ✔ Experience with Australian, UK, EU and US standards ✔ Clean, well-organized CAD models and drawings for efficient review and manufacturing 🔎 Keywords Clients Use to Find My Services Structural steel detailing | Steel takeoffs | Material Take-Off (MTO) | Quantity takeoffs | Tekla Structures | Shop drawings | Fabrication drawings | Erection drawings | GA drawings | Assembly drawings | SolidWorks sheet metal | DXF for CNC | Curtain wall detailing | Façade shop drawings | GRC detailing | Modular construction | Prefabricated buildings | SWOOD joinery | CNC fabrication drawings | 2D to 3D CAD conversion | CATIA I also deliberately changed "Prefabricated Structural & Architectural Detailing" to "Structural Steel Detailing, Takeoffs & Prefab Construction." Those are much higher-volume Upwork search terms and align well with the kinds of jobs you've been targeting recently.

  • Autodesk Inventor
  • CATIA
  • SolidWorks
  • Autodesk AutoCAD
  • 3D Modeling
  • Structural Detailing
  • CAD & CAM Software
  • Drafting
  • Steel Detail Drawing
  • Mechanical Design
  • Sheet Metal
  • Technical Illustration
  • Industrial Design
  • Packaging Design
  • Injection Mold Design
Usman Y.

Renala Khurd, Pakistan

$18/hr
4.9
83 jobs

I am Senior Mechanical Design Engineer/Product Designer with more than 5 years of experience in SolidWorks Cad Design, Sheet Metal, Cad Designing with 2D Engineering drawings Creation for Manufacturing. I can provide you. Sheet Metal Design Mechanical Cad Design Engineering Drawings Design For Manufacturing Design For 3d Printing Furniture Design and Drawings I have worked on various products and machines designs for smaller and larger clients/companies. I am offering end-to-end solutions, starting with the initial idea and first sketches and finishing with manufactured products ready for market. I can provide you with consultation services, reverse engineering, improving existing products, coming up with completely new products, making modifications to make your product manufacturing-ready… Working on a design for 3D printing, Injection molding, CNC milling, Laser Cutting, Sheet Metal Fabrication… If you have an idea, feel free to contact me for a free consultation about the feasibility of your idea and the best way to make it happen. I can also offer you prototyping and manufacturing services and I can help and guide you through the whole process of product development and manufacturing. I will provide you with everything you need to put a product on the market, creating detailed and manufacturing-ready 3D models and 2D documentation. And I can render quality images for your website, amazon… I am a very creative and innovative engineer. I am a perfectionist and I pay much attention to details, which is very important to me. I always give my 100% to do the job perfectly and satisfy my client's requests. I'm very communicative and easy to talk to and my English is excellent, so I can guarantee that we won't have any issues with communication. Best Regards, USMAN YOUNAS

  • Autodesk Inventor
  • CAD
  • CAD & CAM Software
  • CAD Drafting
  • SolidWorks
  • Autodesk Fusion 360
  • 3D Modeling
  • 3D Design
  • 2D Drawing
  • CAD Software
  • Mechanical Engineering
  • Design for Manufacturing
  • 2D Design
  • Autodesk AutoCAD

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Don't just take our word for it

What does an Inventor freelancer do?

An inventor freelancer converts raw invention concepts into patent-ready technical disclosures and precise engineering drawings for submission to patent offices. This role bridges the gap between a creative idea and the strict legal requirements of intellectual property filings. The professional focuses on creating visual and written documentation that meets United States Patent and Trademark Office standards. They ensure every embodiment of the design is clearly depicted to support a strong patent application.

  • Creates compliant technical drawings using CAD software or hand-drafting tools to accurately depict every embodiment of the invention. These visuals must meet specific USPTO disclosure expectations for utility or design patents, showing all necessary views and details. The freelancer reviews initial sketches to determine which angles and cross-sections best illustrate the function and structure of the device. This step ensures the visual record supports the written claims without ambiguity or missing information.
  • Drafts the written components of the invention disclosure, including the abstract and other required sections for the application. This text explains the technical field, background, and detailed description of the invention in clear, precise language. The writer aligns the terminology with the drawings to create a cohesive narrative that examiners can easily follow. They also prepare the inventor oath and declaration statements needed for official USPTO filings.
  • Assembles the complete provisional or nonprovisional application package with USPTO-compatible formatting and required legal statements. This process involves organizing the drawings, abstract, and declarations into a single submission ready for the electronic filing system. The freelancer verifies that all file formats and metadata meet the technical specifications of the patent office portal. They submit the final content package through the appropriate channels to initiate the review process.

How to hire an Inventor freelancer on Upwork

Step 1: Post a job

Define your invention concept and required patent materials clearly to attract qualified specialists. Use the Job Post Generator powered by Uma™, Upwork's Mindful AI to draft a precise description in seconds. Describe your needs in a few sentences, and Uma creates a tailored post for this role. You can write a new post, update a saved draft, or reuse an existing post.

  • Specify whether you need utility or design patent drawings and list the specific embodiments that require visualization.
  • State if the freelancer must draft the abstract and prepare inventor oath statements for USPTO submission.
  • Clarify if you require CAD files from Autodesk Inventor or hand-drawn sketches for the disclosure package.

Step 2: Evaluate candidates

Look for portfolios that demonstrate compliance with USPTO drawing standards and clear technical documentation. Uma can run instant video interviews and build shortlists with side-by-side comparisons to help you assess fit.

  • Review sample patent drawings to verify correct line weights, shading, and view labeling per office rules.
  • Check for experience preparing complete provisional or nonprovisional application packages ready for filing.
  • Confirm familiarity with the USPTO electronic filing system and required formatting for digital submissions.

Step 3: Interview your top choices

Discuss their process for translating rough sketches into compliant technical illustrations. Interviews can be scheduled and conducted within Upwork Messages with an immediate transcript and summary after each one.

  • Ask how they determine which views best disclose the invention’s unique features and functionality.
  • Request examples of abstracts they have written to ensure concise and accurate technical summaries.
  • Verify their understanding of inventor declaration requirements and how they handle sensitive intellectual property.

Step 4: Agree on scope and begin work

Set clear milestones for drawing completion, abstract drafting, and final package assembly. Use Upwork Messages and the contract workroom for communication and project management, plus identity verification, payment protection, hourly tracking, and project funds for security.

  • Define deliverables such as the full set of patent drawings and the separate abstract page content.
  • Establish a timeline for reviewing drafts and incorporating feedback before final USPTO-compatible formatting.
  • Agree on the method for transferring final CAD files or high-resolution images for your legal team.

Upwork is not affiliated with and does not sponsor or endorse any of the tools or services discussed in this article. These tools and services are provided only as potential options, and each reader and company should take the time needed to adequately analyze and determine the tools or services that would best fit their specific needs and situation.

The rates and information provided in this article are based on current data and industry sources available at the time of publication. Freelance rates can vary depending on factors such as experience, location, project scope, and market conditions. Readers are encouraged to conduct their own research to confirm current rates and trends, as this information may change over time.

How much does hiring an Inventor freelancer cost?

$500-$2,500 per project is a typical range for focused Inventor freelancer work. Final pricing depends on scope, technical complexity, required integrations, source-material quality, revision needs, and the freelancer's experience level.

Patent drawing preparation

$500-$1,200/project

Entry-level to mid-level
  • Compliant utility or design patent drawings
  • Required embodiments and perspective views
  • Exported CAD or hand-drawn image files

Disclosure abstract drafting

$1,200-$2,500/project

Mid-level
  • Written summary of the invention disclosure
  • Drafted required disclosure text sections
  • Revised content based on inventor feedback

Declaration support

$2,500-$4,500/project

Mid-level to senior-level
  • Prepared inventor oath and declaration forms
  • Compiled required inventor identification data
  • Assembled declaration materials for filing

Provisional application assembly

$4,500-$7,000/project

Senior-level
  • Complete provisional application disclosure set
  • USPTO-compatible document formatting and structure
  • Prepared files for electronic filing system upload

Nonprovisional filing preparation

$7,000-$12,000/project

Expert-level
  • Full nonprovisional application disclosure package
  • Structured claims and detailed specification text
  • Finalized documents ready for USPTO submission

Frequently asked questions

Is hiring an Inventor freelancer worth it?

For most businesses, yes: hiring an Inventor freelancer is worthwhile. This approach grants access to specialized patent drafting skills without the overhead of a full-time employee. You pay only for the specific disclosure package you need, which keeps project funds aligned with actual output.

How do I evaluate Inventor freelancer candidates?

Review their portfolio for USPTO-compliant patent drawings that clearly depict multiple embodiments of an invention. Ask candidates to explain how they format abstracts and inventor declarations to meet current filing standards.

What tools does an Inventor freelancer use?

An Inventor freelancer uses CAD software like Autodesk Inventor to create precise technical drawings. They also utilize hand-drawing tools for initial sketches and the USPTO electronic filing system for submission.

What deliverables does an Inventor freelancer produce?

An Inventor freelancer produces a complete application disclosure package ready for USPTO filing. This includes patent drawings, a written abstract, and the required inventor oath or declaration statements.