i realize some of the hard oils do the cleansing but what about lard, crisco, ect. what do these do to the soap itself. is it just a cheaper source of oil? at this time i was planning to use olive, canola, and coconut oil. with emphasis mainly on olive and canola. so you have a suggestion for another hard oil? and if i don't use a solid oil in the crockpot version, then when do i know to continue on with the soap making process...i don't remember seeing a temp, but will read again.