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 “watertight”
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AnswerHardware
Can 3D printed parts hold water pressure?
Published pressure results for printed parts: Prusa Research's 20 and 30 meter dives, a forum test at 5 to 8 bar, and the O-ring rule for threaded fittings.
AnswerMaterials
Is PLA safe for water containers?
PLA holds cold water: Prusa's PLA pots showed no leaks and its boxes stayed dry at 20 m. It softens above 60 °C, and Prusa does not recommend prints as food containers.
AnswerMaterials
How to seal 3D prints with epoxy or a coating
Brush-on epoxy step by step from the XTC-3D data sheet, Prusa's results for epoxy, lacquer, chemical smoothing and nail polish, and the food-contact rules.
AnswerMaterials
Which filament is waterproof? Materials for parts that hold water
PLA, PETG, ASA, PP and PC compared for holding water: the perimeter count Prusa needed, data-sheet water absorption, heat limits and outdoor use.
AnswerTroubleshooting
How to test a 3D print for leaks before you trust it
A fill-and-observe leak test on a dry tissue with two sourced pass points: dry after one night (Prusa Research, closed models) and dry after 48 hours (Bambu Lab, vases).
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.