Gary,
Likewise I've embraced using the recipes posted here by Chris and some respected posters from B&B to give the artisan formula a try in my kitchen. For me, its working out marvelously and I'm getting the shaves of a lifetime from the very simple MdC reverse engineered recipe.
Call it some OCD, but I've been doing a lot of reading on the subject and I'd like to share some information regarding the basics and SoapCalc. A great source of information is
http://www.soapmakingforum.com/ and I've got lost in there for hours at a time.
1. All great soaps have Stearic Acid, and lots of it. Typically 40% or even higher. Stearic Acid can be derived from either animal or vegetable sources, but once its processed into Stearic Acid, its all the same.
2. Lye - Soaps made with KOH (potassium hydroxide) give a more water soluble shave soap than those made of NaOH (sodium hydroxide). KOH soaps are softer and work better with harder water. Its also easier to load the brush.
3. SoapCalc - There's lots of "noise" on the left side of SoapCalc...stuff about the characteristics of soaps and types of acids. In our case as wet shavers, we are making a specialty soap. We are not concerned about "cleaning", since most people I assume shave with a clean face. The better shave soaps have low hardness, low cleaning, moderate bubbly, high conditioning, and high creamy. High creamy gives the best soaps, but too high a "bubbly" give you a sudsy later that breaks down fast. High creamy, high conditioning, medium bubbly, low hardness, low cleansing is the way to go for a specialty shave soap.
4. By playing around with SoapCalc recipes, the highest "creamy" number I can get is 59 while still following the guidelines above in para 3 to get a great shave soap. There are artisans out there claiming to get a "creamy" number of 79 and their recipes are a closely guarded secret since it is a business. I can only wish to make such a soap at home.
5. For me personally, this is the biggest wake up. Tallow and/or lard is not the "be all and end all" when it comes to shave soap. The numbers on SoapCalc don't lie, and it boils down to preference. I used to think tallow was necessary to make a spectacular soap and now the knock off MdC recipe has blown that conception to smithereens. Breaking a fat, oil, or butter from any animal or vegetable source down to its constituent acids opened up my eyes to how great shave soaps are made.