This is a seedling pots and grid to hold them in place for seeds and small plants update 28/05/2015* because of hard time of a extracting the plants i made a new version with easy access to open the containers and pull out the plantsyou need to print the pots with 1 or 2 shell 100% infil and 0.2 mm layer hight.the grid you can print with 2 shells in the new version you need to print the seedling pot and the bottom piece they should fit tit. when you want to extract the plant, you need to pool out the bottom piece and use the pusher to push out the plant from the bottom. the pusher can also help to compact soil into the container.