I can't remember the movie, but there was a fellow (cowboy) that I guess the Indians were not happy with, so they burred him up to his neck and put a canteen just out of his reach. When the other fellow comes along (who they have been having some ongoing rivalries through the movie) he asks him (and I loved this line) "Are you trying to get in or trying to get out?" Perhaps, a glass or wine or a few beers made that much funnier than it was, or perhaps it was the timing or delivery, but I nearly fell off the couch.
Are you sure the liquid is coming out of the bars or is it perhaps condensing onto the bars? How long have they been curing? What is the humidity of where they are? Does the liquid zap? Does the liquid feel greasy? Does it evaporate over the day?
There are only so many things it could be.
1. Excess water trying to escape in the curing process that is attracted back to the bar from the hygroscopic nature of the salt.
2. Excess water from the curing process that can't evaporate because the humidity of the room is too high.
3. Liberated glycerin not bound into the soap matrix.
4. Some portion of unsaponified fat (due to the superfatting) that is not bound into the soap matrix.
5. Some unsaponifiable substance that you used as an additive (fragrance or carrier wax such as jojoba etc)
Most of the times I have had liquids on my soaps I have just ignored them and in a day or so they "reincorporated" or evaporated. If the soap is curing it is actually shrinking to some extent and that may be forcing things of lower density "out." I turn my soaps while they are curing and I have never had any dripping from such things. I did have a molded log that simply "worked" too fast and created a pocket of lye water but that was a puddle not a droplet.
If it greasy feeling it is probably some of the superfatting though glycerin could feel like this too. It should reincorporate.
If it feels more like water, and it is probably zappy then it should evaporate, but if it is in high enough quantities it may "wilt" the soap where it is sitting on it. If it is not quite so zappy it may be lime water or washing soda (calcium carbonate) or (sodium carbonate) and when it evaporates it will leave a bit of ash behind.
If it bothers you blot it. Most times ignoring it will be fine. If it is excessive, then you may have done something wrong in your calculations, you may want to double check the numbers. You can try checking your humidity and possibly trying to increase the air flow around them.
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