14cm IKEA Dome Terrarium

thingiverse

Edit: after a year, all the plants were dead - the soil amount in this setup is insufficient to buffer the environment properly - also, day/night temperature fluctuations cause moisture to evaporate from the system - this means adding a small amount of water every 6 weeks is necessary. This resulted in too much water for about 4 weeks, leading to fungus growing on the plants eventually. I took the idea of the IKEA dome Terrarium and modified it slightly since I couldn't get the Moss to thrive. If you print this in PLA, use a lacquer on the inside of the dome parts. PLA expands ever so slightly when exposed to water - if not addressed, it will burst your dome, as happened to me. Also, IKEA domes have some variance, so use the test object to validate whether it fits - adjust the scad files if necessary. I recommend placing a 1mm rubber sheet on the bottom of the base to prevent it from sliding around. Update: testing shows that my dome terrarium gradually loses water over time - add a few tablespoons every 6 months. I assume the loss is due to expanding/contracting air with temperature changes between day and night, slowly "pumping" higher humidity air from inside to outside. You can tell by observing condensation fogging the glass when plants are active in light - if there's none or you have a plant needing slightly more water, add some.