I have found your website to be extremely helpful because of your analysis of glaze chemistry and other information too. I have been able to mix all my own glazes and troubleshoot with the information you provide. I want you to know how much you're helping fellow potters all over the country and I truly appreciate your generosity in sharing the information.
Planarity in 1200c tile May 2018
This site is an amazing resource. I'm getting back into pottery after about a 25-30 year hiatus, and back then technical information like what you share was almost impossible to come by.