3D Printing Watertight Containers
Most normal 3D prints are not watertight. There are a few reasons for this, but primarily it is little gaps between layers that is the culprit. [Mikey77] was determined to come up with a process for creating watertight objects and he shared his results.
The trick is to make the printer over extrude slightly. This causes the plastic from adjacent layers to merge together. He also makes sure there are several layers around the perimeters.
Of course, over extruding may not be good for your part’s dimensions. There are other techniques we’ve seen that work, too, like acetone smoothing ABS …read more