Modular planter with concrete mold

I designed a flower pot with a separate lower half to collect excess water. The parts can be printed in different materials and mixed and matched to your liking.In addition, I created 3D printable molds for casting the planter in concrete. If you want to use the molds I highly suggest printing the green colored ones (as seen in the exploded view drawing) in a flexible filament. The file “Mold_Upper_Pot_Outside” has to be printed twice.To cast some concrete planters (or parts of it) prepare your mold prints by coating them in a thin layer of oil (I used some leftover sunflower oil from the kitchen). For the concrete, I used about 1 part cement, 2 parts silica sand, and as much water until I got to the right consistency. Then filled up the prepared molds (as seen in the images) and vibrated them to get the trapped air out of them. After 1 or 2 days you can take them out of the molds and spray a couple of layers of a protective lacquer on it, otherwise the concrete will absorb all the wat