PET bottle irrigation spike

prusaprinters

The cap is designed to fit PET bottles (with thread PCO1881 which fit all bottles I could find in my household) and turn the bottle into a water irrigation system for e.g.  flowers.The cap is printed without support, but a 0,2 mm surface is to be cut out from the bottom, refer to the pictures.Make sure the soil is wet before the bottle is installed, otherwise the bottle will drain faster.Fill a bottle with water, screw the cap on the bottle and place it upside down in e.g. a flower pot. Now the plant can be left for a few days.The tip can be cut if a larger hole is needed.2022-06-08: MkII added with improved profile to allow better support in the pot. Also added four rows of holes on the wall. Hole dimension decreased on first version.2022-08-05: Added different versions of MkII with alternative hole sizes.There are now versions with 1 mm, 0,75 mmm and 0,5 mm sized holes. It seems different type of soil requires different hole dimension not to be emptied too quickly.2022-08-16: Added 0,5 mm single (top) hole only version.