Ok my brain is agog with this info. Help me out here would you? You mix all your oils in the appropriate quantities as you would for a smaller batch but in larger amounts. Ok I get that. Now help me out with the lye by the gallon thing. You do it the same way? So say your recipe calls for 12 ounces of lye and 24 ounces of water (or whatever) you just multiply that times 10 or whatever and you have ready made lye solution. Ok I get that part, I think. Correct me if I have it wrong. The part I am not understanding is how you know how much lye solution to use for a batch. The oils, I get that. You want 3.5 pounds or whatever of oils. For the lye solution, do you just weigh it til the scale says whatever your normal lye plus water amount would be?