Semi-Automatic Cone Filler with Grinder

I'm looking for a skilled engineer to design and build a semi-automatic cone filler integrated with a built-in grinder. The device should be made of plastic.

Key Requirements:
- Semi-automatic control system
- Built-in grinder integration
- Durable plastic construction

Ideal Skills and Experience:
- Experience in designing automated machinery
- Proficiency in integrating grinding mechanisms
- Knowledge of plastic materials and manufacturing processes

Please provide examples of similar work and a detailed proposal.