3D Printed Interlocking Cookie Base

I'm seeking assistance to design and print a base for a 9x12 container with 3/4” legs. The base should be split into four interlocking pieces to facilitate printing and fit inside the container. The goal is to create a structure that allows for stacking 2-3 layers of cookies. I have a 3D printer but need help with designing the interlocking mechanism.

Key Requirements:
- Design a base split into four interlocking pieces
- Ensure the interlocking pieces are fixed and secure
- The base should fit a 9x12 container and include 3/4” legs
- Suitable for stacking 2-3 layers of cookies

Ideal Skills and Experience:
- Proficiency in 3D modeling and design software
- Experience with designing interlocking mechanisms for 3D printing
- Familiarity with FDM 3D printing technology
- Ability to create functional and durable designs for practical use

I'm looking forward to collaborating with someone who can bring this project to life and help me successfully print the interlocking base.