GuideTroubleshooting
Are 3D prints waterproof? How to make a print watertight
Prints leak by default. Prusa Research's fix: 4 to 6 perimeters, 105 to 110 percent flow, 0.15 mm layers, one vase-mode wall, and epoxy for parts that must stay sealed.
Tagged “slicer-settings”
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AnswerTroubleshooting
How many walls make a 3D print watertight?
Four perimeters held water in PLA and PETG in Prusa's tests, two in ABS and PP, and one vase-mode wall in every material. Flow and layer height matter too.