45/55mm Hydroponic Pot
by vik, published
No, not that kind of hydroponic pot. This is just a little plastic tub with a mesh bottom that you fill with vermiculite, perlite, clay balls etc. and plant hydroponic plants in. The pots then go into 45mm or 55mm holes drilled in a piece of 100x50mm rectangular downpipe to form a [ http://en.wikipedia.org/wiki/Nutrient_film_technique ] Nutrient Film Technique (NFT) hydroponic system. I grow a lot of tomatoes, beans, lettuce, brassica, celery, basil etc. in my NFT runs but the pots keep on breaking.
Now I don't need to worry. Even if the plant bursts the pot, at the end of the growing season I'll just throw the whole lot in the compost heap and print another one. They should stack, so you can keep a few ready to hand. It's cool using your RepRap to help grow food!
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Print from food-grade biodegradable plastic, typically PLA. The outer wall is just one layer thick giving a total weight of 9.5 grams for the 45mm version, so you might want to leave homing off to ensure an even wall.
Print on a single-layer raft, and cut around the base of the object with scissors to leave the mesh partly covering the bottom of the pot. This will help keep your hydroponic growing medium in.
Should scale to suit systems using other pot diameters.