Mechanic Cold Process Soap Tutorial

Have you ever heard of "Mechanic Soap?  I never heard of the term before until I saw this recipe from The Soap Queen called Mechanic Cold Process Soap.  Basically, "Mechanic Soap" refers to extra scrub bars.  The exfoliants help remove grease and oil from working hands. The Soap Queen kept these bars of soap simple with no colorants or fancy designs. This is an intermediate level project that takes one to two hours and results in about three pounds of soap.