Here's a set of round baking cutters/forms for many kitchen uses. Set includes 7 sizes that nest into one another. Cover photo shows two of these used for cutting doughnuts. These can also be used for cutting cookies, biscuits or used as a form for desserts or other kitchen needs. Even use these in play kitchens or playing with Play-Doh.
These rings have a lip on them to grip and press against, the other side has a 45 degree bevel to help cut when pressing down.
Recommend to print with PETG. These should do okay in the dishwasher on the top rack, however I recommend hand washing, especially the larger ones as they may warp and start to take on an oval shape. Printing with PC might make them dishwasher safe but I have not tested that. Do not set these on a heated surface or put them in the oven as they will start to soften even at low cooking temperatures.
PETG
0% infill
2 Perimeters
3 Solid layers top and bottom
0.25mm layer height, reduce layer height if you want a sharper point on the cutting side
The author hasn't provided the model origin yet.