Model originally uploaded to Thingiverse at https://www.thingiverse.com/thing:4362018.
Easy-to-print self watering pot
Print the base in VASE MODE (aka Spiralize outer contour in CURA) for easy, rapid, water-tight results. The base design cannot be printed without this setting (or you'll have to modify the design) since it's otherwise just a solid block.
I struggled with other self-watering pot designs because they all seem to incorporate complex features in the base, which needs to be water tight. My printer vibrates and wiggles too much to print complex designs in a water tight fashion. Most designs aren't 0.8mm nozzle compatible either, which is frustrating when you prefer large nozzles and the associated faster print times (4x to 8x speed improvement from doubling the nozzle size)
This design fixes those issues. The water-tight portion can be (must be) printed in vase mode, which results in a nice water tight result in a relatively short print time. The whole design is 0.8mm nozzle compatible, so fire away with your large nozzles and enjoy success in printing fast!
My printer is old and struggling these days, but I can still print the base in about 1.5 hours and the insert in about 3.5 hours with my 0.8mm nozzle.