Celalettin T.

www,celalettintoprak,com

I design real products that get manufactured - not just 3D models.
Manufacturing-ready CAD, prototyping, and Design for Manufacturing (DFM)-driven product development for industrial and consumer products.

I’m an Engineer and Industrial Product Designer focused on manufacturing-driven product development.

My background spans automotive, industrial, and consumer products, where I’ve worked as a Product Developer, Designer, and Technical Lead in production-oriented environments.

I don’t approach projects as isolated design tasks.
I approach them as systems that must survive prototyping, manufacturing, assembly, cost pressure, and real-world use.

📐 What You Can Expect Working With Me:

- Clear, structured CAD suitable for iteration and production
- Design decisions informed by manufacturing reality
- Practical communication with engineers, suppliers, and manufacturers
- Honest feasibility feedback (go / no-go when needed)
- Designs meant to be tested, not just rendered

📐 Core Capabilities:

- 3D CAD modeling (Siemens NX)
- 2D technical drawings (AutoCAD Professional)
- CNC, laser cutting, and sheet metal preparation
- Injection molding–ready part design
- Fixture, bracket, and assembly design
- BOM creation and production planning support
- Reverse engineering and scan-based modeling

📐 Injection Mold & Manufacturing Experience

I have hands-on experience designing plastic injection molds and mold-ready parts, including projects for automotive and food-related products.

⚙️ I’m familiar with:

- Injection molding–ready design, Core / cavity logic
- Draft angles & wall thickness optimization
- Parting lines and shut-off surfaces
- Shrinkage and material behavior
- Gate concepts (hot runner, valve gate)
- Collaboration with mold makers and CNC shops
- Design for Assembly (DFA), production validation
- Engineering-driven product development
- Long-term product roadmap support

My focus is always on tool longevity, cycle time, surface quality, and cost efficiency.

📏 Typical Projects I Work On:

- Automotive accessories and aftermarket products
- Mechanically complex plastic or metal parts
- Prototyping-heavy product development
- Production validation before tooling
- Redesigns for cost reduction or manufacturability
- CAD clean-up and production conversion

📌 Primary CAD Tool: Siemens NX, AutoCAD and Geomagic Design X
I work primarily in Siemens NX, which is widely used in high-end automotive and industrial manufacturing.

I can deliver clean, fully editable STEP / STL / Parasolid files, and I regularly convert and work with SolidWorks, Fusion 360, Rhino, SketchUp, and scan-based data.

If you use SolidWorks or another CAD system, this is not a limitation — deliverables are always production-ready and compatible.

📌 If you need more than a modeler—someone who understands how products are actually built and scaled—I can support your project from concept to production readiness.