Small succulent planter designed using the golden ratio. The diameter and height are in the golden ratio and the curls were made using the popular golden ratio recursive spiral.
The sides of the planter are vented with slits that should let air thought but not water when planted. The bottom also has slits that should let excess water out into the built-in channel to evaporate. Note that this is not meant to hold a lot of water, and too much water will spill out of the bottom channel, but at least it will not sit and rot.
The top lip is flat and inclined to make sure water rolls inwards towards the center. The maze-looking crevices on the top lip are meant to catch the water you pour on it and distribute it around the center. To that end, I made a channel inside the top lip were water should collect until it's leveled around the circle and then it should start to pour out into the soil evenly. This worked perfectly at first (to my amusement), but when I planted it, soil clogged the crevices and now they just look nice but don't work.
UPDATE: Use the latest version. Last STL uploaded is just to correct the orientation and to make the watermark less intrusive. V2 is where I corrected a bad overhang, this should print without support.
I printed this at 120 speed and 220 temp using PLA with no support.