This set contains Multi-purpose spacers of varying thickness. The thickness starts at 1 mm and goes up to 5 mm. I have only attached one exemplary G-code file for the 2 mm spacer. Please find attached the Autodesk Fusion 360 model, so you can adapt the dimensions of the spacers to your needs.
I use the spacers for woodworking, for instance when needing a defined clearance between two parts. The spacers can assist with any work where you need a defined spacing between two parts, I could imagine for instance when adjusting new windows, putting tiles, or simply as spacers under an object.
The author hasn't provided the model origin yet.