I started reading that thread, and got a little confused. Maybe now that I have a few batches of CP soap under my belt, I will look again. Cheers!
Do read it again... with pen and paper at hand. Make notes. Write down your questions. I've read that entire thread at least three (maybe even 4 or 5) times now. I made my first shave soap about a year and a half ago (my husband is now using the last of that test batch) and have been making sample batches of various kinds over the past few weeks just to see what we (me, my husband, my testers) like best.