Kevin Dunn, PhD gives an excellent analysis on what causes orange spots, or affectionately called DOS by soaping professionals.
A fantastic list of resources all in one place by ModernSoapMaking.com!
Coming up with different recipes is half the fun of soapmaking. There are very few ways you can get it totally wrong if you follow a few simple guidelines and understand basic oil properties. Here’s a good article with some tips and tricks to finding the “secret to a good soap.” http://www.modernsoapmaking.com/secret-to-the-best-soap-recipe/
Make sure you also download my free calculator that will assist in coming up with a good formula based on experienced soapers’ averages:
A good article on the properties of single oil soaps by Zen Soaps.
Pretty cool tutorial on using wires to create an inverted soap stamp. I’ll have to try this on a future batch!
Good video on making molds of any size out of corrugated plastic. I will never, ever buy a silicone or wooden mold again! These are so easy and inexpensive and need to liner. A sheet of this material is about $5 at Lowes or Home Depot and is 24” x 30” in size.