
Well, the title says it all really!
If you like it enough to print, I would recommend the following to make it watertight:
in Print Settings → Advanced, up the Infill/Perimeter to something like 40%. Might not matter or might help close some gaps
make sure you have enough perimeters and top/bottom surfaces
Up the extrusion multiplier a bit, like 2-5%, this will also help with closing some gaps.
Also! I personally really like using some modest fuzzy skin settings for the outside to hide the seam and artifacts in an otherwise very smooth surface. Also makes it look a bit softer and organic! For this print I prefer 0.2mm on both the point distance and thickness for the fuzzy skin settings.
Credits:
MteWinkel