I designed these lid holding storage devices for a friend that wanted to organize her kitchen cabinets. As you can see in the pics, the larger version works for several of the larger sized lids and the smaller was specifically designed for the small round lids. There are also dividers to help separate different sizes/styles of lids. This was designed in inches, so if it shows up tiny in your slicing software, then you need to multiply the scale by 25.4 (convert inches to mms). I hope this helps you organize your kitchen and find your lids more easily. Let me know what you think and post those makes!