What is the base of the soap? Lard and tallow are hard oils, and should be okay with unmolding after 12 hours or so. If your base is olive or another soft oil, you may have to leave the mold in the fridge or freezer longer before trying to unmold. I've had recipes with a lot of olive oil I could not unmold for 2 days. It will all depend upon your recipe.I am new to making soap. Haven't made a single bar yet. I want to use goats milk in it. Can I substitute half the water for milk? Using a basic recipe from a book that didn't need palm oil cause I don't have that yet. Thank you.