I made a  circle slicer. This is the second version.(circle slicer_v2) . It can cut small circles ranging from 1 to 4 centimeters in size(radius).
In addition , circle slicer first version has been updated to version 1.1 . For updated details, please refer to the main page content. circle slicer_v1.1

update version2.1:This update has modified the rotating handle. Make it operate more conveniently.(update file: circle slicer_v2.1_handle.stl)

update v2.1.1：   Adding prop up for the three prong handle. Prevent scratching of the paper when pushing down.

Assembly drawing

Tips:

The slider must be tightened and fixed firmly.

The rotation direction must be along the knife edge.
 

Utility Knife 18mm Snap-off Blades 14 or 15 segments

Similar to what is shown in the figure above.

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