3D Printable Design File Needed

I need a file for a design that can be 3D printed. The primary purpose of this design is to create a functional prototype. I prefer using PLA as the material for the 3D print. I have approximate dimensions for the design, but they are not exact.

- Key Requirements:
- Design must be suitable for creating a functional prototype.
- Use PLA material for the 3D print.
- Consider approximate dimensions provided.

- Ideal Skills and Experience:
- Experience in creating 3D printable designs.
- Proficiency in working with PLA material.
- Ability to interpret and work with approximate dimensions.