I made a circle slicer, Mainly used for cutting paper.

（Maximum circle diameter ≈30mm  Minimum circle diameter ≈6mm）

update :  To prevent slipping during cutting. Added grip, It is easier to cut. Add the bottom texture to increase friction. Or you can attach double-sided adhesive stickers at the bottom.

update file_v1.1 (other parts_1.1)

installation instruction  is shown in the picture.

special tips:
I need a wallpaper blade, and break off two parts with plier (see picture. ) after inserting blade.(Cut your hand carefully)
You'd batter to fixed  the four corners of the paper when cutting paper, and hold center axis  cut circle.

( clockwise rotation to loosen  anticlockwise rotation  to tighten used  for fixed dimension   when adjustment dimension)

This model was printed using PLA. (fill in 10%，using a lower layer hight (0.15/0.2mm)，no support)