This fun set of star boxes has seven sizes, each box fits inside the next size up. The smallest box is 4cm (1.5") wide and the largest 16cm (6") wide. The walls are 2mm thick so the boxes are quite stable.

Check out my iPhone app called 3D Cookie Cutter. It makes creating and printing cookie cutters a breeze.
https://apps.apple.com/ca/app/3d-cookie-cutter/id1493296732

Please don't sell my digital files or use my photos