The idea for this one came after my other 3d Print of a planter: I just realized I was not very interested in designing a saucer for the planter as generaly I don't like them.
So I just decided to design a planter with good draining capacities but watertignt so that you don't have to put it on a saucer. 3Dprinting is made for that ! In fact my design is impossible to mould I think. There is a space under the container that can receive any excess water (it's not that big, so no need to pour 1 liter), and two big vents to allow it to dry.
The print itself should be easy as I designed it for no support needed.
The planter is modelled in Blender, and the cut that explains the design too. The files can be downloaded from youmagine.