cookie cutter round customizable

needed a special size of cookie cutter, so created a customizable version.
I "sharpened" the edges to make it a "cutter"

see also my other cookie cutters:
Star
https://www.thingiverse.com/thing:1959578
Flower
https://www.thingiverse.com/thing:1887302
Christmas tree
https://www.thingiverse.com/thing:2714875
Tetris
https://www.thingiverse.com/thing:4653117
Heart
https://www.thingiverse.com/thing:4744013

As requested: How are the sharp edges created?
OpenSCAD allows to create "cyl