Earlier quoted context omitted.
yeah but silicone will pick up microscopic details, so you will retain the grooves from your print doing it that way, which retain moisture, which gives bacteria a chance to grow.
Indeed, and that is a very clever use for the wax. Seems like you might be able to reduce the loss of detail by having a warm mold, as long as it doesn't warp the mold. Might also be fun to experiment with the opposite side: 3D print the mold and use it directly, then dip that in silicone to coat it and eliminate the artifacts that way. Plus then you could have the outer layer be a softer composition, like an overmol…
It just won't show up with like a linen texture or something.
Body safe silicone is very thick, you'll have a very hard time getting an even coating.