Hydroponic Culture Set with pet bottle. under 0.1mm high resolution and over 75% Density is recommend for "BaseCup.stl" and "PETbottleAdapter.stl" to prevent water leakage. 25% Density is for others(*.stl). Image is an example printed by ALUNAR M508 with PLA. one Marble is inside PET bottle. Newest Version : https://www.youmagine.com/designs/birdcage-adapter-with-simple-hydroponic-culture Demo of Newest Version: https://www.youtube.com/watch?v=tBpWoI_aSO0