I have a question about the volume of a mold. I know that volume is figured out by multiplying length x width x height, and then multiply by .40. Would I be wrong to think that you would add up all your oils AND the lye/water solution to fill up a mold? For example- if my oils add up to 16 ounces, and I also have 6 ounces of lye/water solution, I would need a mold that would hold 22 ounces (a mold with a volume of 22 ounces)? Thanks!