Handle water tank 18L by AntoLed on Thingiverse: https://www.thingiverse.com/thing:3820152

Summary:
use 4-5 perimeters the handle is made to be truly resistant by means of perimeters.A 25% fill should be sufficient if you use a good number of perimeters.set 6 levels of bottom and up.The design works well with bottles with 55mm head diameter.a plate of 145x145 mm is sufficient