Electronic Paintbrush Design and Prototype -- 2

I'm seeking an experienced product designer to create a working prototype of a unique electronic paintbrush. The project is currently at the preliminary sketches/design stage.

Key Requirements:
- 3D Modeling: Create detailed and accurate 3D models of the design.
- Mechanical Engineering: Ensure the functionality and durability of the mechanism.
- Material Selection: Advise and select appropriate composite materials for the product.

Ideal Skills and Experience:
- Strong background in product design and development.
- Proficiency in 3D modeling software (e.g., SolidWorks, AutoCAD).
- Experience in mechanical engineering principles and applications.
- Knowledgeable in composite materials and their properties.

Please provide a portfolio showcasing relevant projects and experience. Looking forward to your bids!