This idea was given by one of colleagues.
She said that she wants a ring to form salads on plates. Lafer I asked for sizes.
I didn't find something existed on this side and made design "as simple as possible".

Wanhao Duplicator i3

No

No

0.2

See notes

For ring brim 5 lines is required for better adhession.
Infill for ring - 0%
Infill for press - 13% or more
Top/bottom layers - 0.6 mm or 3 layers.
Shell - 0.8 mm or 2 lines.

Speed - 40 mm/s