Ultralight Rockwool Net Cup for Mini Hydro Tower

The original net cups were a giant pain to print, required support, too many retractions, etc.

These print faster, use less filament, and hold rooted seedlings in 1" rockwool cubes.

Optimized for PETG @ 0.2mm layer height. 3 perimeters, 0% infill on an ender 3 pro.