Ifixit project mat confused on how to organize screws

Good question!

I personally treat each grid square on the project mat as a “step” in the replacement process. This will depend on your project mat, of course, but the iFixit Magnetic Project Mat has twenty grid squares to write on.

What I usually do is follow the respective iFixit guide for my repair and then place screws or small metallic parts that are being removed during that step in a grid square. I’ll then write the step number in that grid square.

This helps me out when I go to reassemble the device because I’ll have everything in numerical order. Most reassemblies will be identical to to the disassembly but in reverse.

Hopefully this process helps you as well!