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Zhengrui L.

Mechanical designer and product innovator specializing in SolidWorks, 3D-printed functional prototyp

Kunming, China

Global rank:

5,139 / 115,638

Skill pts: 6

2D & 3D Mechanical Drawing 2D & 3D Modeling Solidworks 3D Modeling Inventor 3D Solid works SolidWorks

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About

I am a mechanical designer and product innovator with strong expertise in SolidWorks, 3D-printed functional prototypes, and custom mechanical solutions. I specialize in solving unique mechanical challenges, from concept sketches to manufacturable STL files.

Notable projects include:

1.Motorized Cable Organizer – automated cable retraction system for home/office use.

2.Mechanical Shoe Washer – fully mechanical design, different brushes for various shoe areas, low failure rate, patent pending.

3.JSAUX ModCase Kickstand Replacement – mechanical locking mechanism, perfect compatibility, 3D-printed prototype.

I hold a degree in Aircraft Manufacturing Engineering and am skilled in CAD modeling, 3D printing, ANSYS simulation, and mechanical problem-solving.

Experience

Founded a personal design studio focused on CAD modeling and functional 3D-printed products. Personal Project · Self-employed May 2021 – Present 4 yrs 7 mos Kunming, Yunnan, China Founded a personal design studio focused on CAD modeling, product innovation, and functional 3D-printed prototypes.
Delivered design-to-print solutions, from concept sketches to manufacturable STL files, across consumer products and mechanical inventions.
Key expertise: SolidWorks modeling, 3D-print prototyping, and custom mechanical problem-solving.
I specialize in turning innovative ideas into manufacturable mechanical designs.
My experience includes:

• Automatic Cable Organizer Box – Designed a motorized system to neatly store and retract charging cables, maintaining durability through an “8-shaped” winding mechanism. Achieved compact size, user-friendly plug-and-play, and elegant desktop integration.

• Mechanical Shoe Washing Machine – From concept to prototype, developed a purely mechanical washing system using partitioned brushes and detergent applicators. Delivered results comparable to professional cleaning shops while reducing cost and failure rate through minimalistic design.

• JSAUX ModCase Stand Replacement – Engineered a locking stand mechanism for Steam Deck accessories, permanently solving looseness issues while maintaining original dimensions and full compatibility with existing modules.

I combine mechanical engineering skills with creativity, offering reliable design-to-print solutions for custom products and problem-driven innovations.

Education

Civil Aviation University of China BA, Aircraft Manufacturing Engineering, GPA 3.8 2016 – 2020 Completed a comprehensive curriculum in mathematics, mechanical design, engineering drawing, and aircraft design.
Gained proficiency in SolidWorks, 3D printing, ANSYS, and C programming, with hands-on experience applying these skills to innovative mechanical projects and functional prototypes.

Other experience

Engineered a replacement kickstand for the JSAUX ModCase on Steam Deck Engineered a replacement kickstand for the JSAUX ModCase on Steam Deck, addressing looseness issues in the original. The design uses a mechanical locking mechanism, ensuring a stable, wobble-free stand. Dimensions match the original for perfect compatibility with other accessories, while maintaining a slim profile.
Designed an automatic cable organizer box Designed an automatic cable organizer box to solve cluttered charging cables on desks. The motorized box neatly retracts and stores cables using an 8-shaped winding mechanism. Users can plug or unplug cables anytime without damage. Compact, durable, and visually appealing, it adapts to standard desk setups and simplifies cable management.
Designed an original, fully mechanical shoe washing machine Designed a fully mechanical shoe washing machine addressing shortcomings of conventional wave-type machines. From scratch, developed a system that applies detergent and uses different brushes for the shoe interior, exterior, and sole. The design achieves low failure rate, high cost efficiency, and enhanced cleaning performance. Patent pending; currently in discussion with a leading Chinese home appliance company for potential collaboration.