This is a hydroponics net cup that doesn't require clay pebbles or any other grow media to support the grow cube. The grow cube fits snuggly into the net cup. This design leaves a large area of the underside of the grow cube exposed preventing obstruction to root growth.
It fits within a 3 inch (73-78mm) hole and holds a 1.5 inch (36mm) grow cube. I have other designs and intend on making more if requested. Please comment the size (hole and grow cube) that would be best for you and I'll make the most popular.
I've used this design for growing different things, with no problems, including:
-Chillis (in pictures)
I've found it's best printed without supports, as removing them usually results in damaging the net cup.