Hydroponic Net Pot Lid

This year I'm experimenting with hydroponic growing, Kratky method specifically. I made this jar lid with inbuilt net pot. It screws onto common glass jars.

• Jar neck diameter should be 8 cm with 6 lug threads. A very common size in Europe.
• Easy to print, designed so that no supports are needed.
• Suited for 0.30 mm layer height to speed up printing.
• A sock or paper around the glass jar is recommended to avoid algae growth.

I'm growing in nothing but perlite, some vermiculite and nutrient solution (generic house plant fertilizer). A few weeks later and the lettuce has grown like this: