CAD Drawings & 3D Printing Project

I need CAD drawings and 3D printing for two existing parts that I need replicated with slight modifications.

Requirements:
- Create precise CAD drawings.
- Slight modifications needed on existing parts.
- 3D printing of modified designs.

Ideal Skills & Experience:
- Proficiency in CAD software.
- 3D printing expertise.
- Attention to detail in replication and modifications.

Please provide examples of previous work.