I've been using a 3 oil recipe (great beginner recipe) out of a soaping book I bought. It calls for 8 ounces of water and 4.2 ounces of lye. When I ran it through soap calc, water as a percent of oils is 26.75 (lye concentration 34.7%). The calculator has a standard 38% water as a percent of oils, so running the recipe through with that, it shows I should be using 12.16 ounces of water and 4.56 ounces of lye for a lye concentration of 27.52. From what I've been reading, when the lye concentration is 40% it is considered lye heavy. Do any of you use a recipe with this high of a lye concentration?