That cutter you show looks like a cutout not a stamp. A stamp is for embossing or debossing but not for cutting out pieces.
To make a cutout follow this guide: How to create a 3d printed doughnut cutter with center cut out using Cookiecad
That cutter you show looks like a cutout not a stamp. A stamp is for embossing or debossing but not for cutting out pieces.
To make a cutout follow this guide: How to create a 3d printed doughnut cutter with center cut out using Cookiecad