This is the OpenSCAD code used to customize the drawer lining for tool drawers. The attached STL file was designed for my own toolbox, but I strongly recommend that you create your own custom lining based on your own needs.

This project includes a total of three .scad files:

1) A simple and clear example to help you get started quickly.
2) A more complex version with a built-in finger groove design, making it easy to remove those pesky small parts.
3) An example with a hexagonal drill bit holder.

Update: A main layout diagram of the complete drawer has been added. This diagram comes from my initial design process and clearly shows how the finished product can be disassembled into eight separate components.

I wish you a pleasant experience using it!