Objective of this research: 1). To study the mix rate of materials used in the making of cordiaite sheets 2). To try out a combination of raw materials that can be used to make Cordierite sheets 3). To study the effectiveness of the test to measure the satisfaction of users of Cordia Wright sheets The research instruments were X-ray machines, Fluorescence Spectrometry, strength determination machines. Water absorption and statistical questionnaires used in the analysis were percentage values, shrinkage values, water absorption values, and strength

            The results from the analysis of Kaolin, Lampang, Lampang Province, 12 chemical properties, with descending number of compounds as follows: 56.20% calcium oxide (CaO), 0.32% magnesium oxide (MgO), 0.32% silica (SiO2), 0.10% and 43.70% decomposition of the substance after calcination (LOI) contains 99.50-99.80% calcium compounds and a small amount of iron oxide and used as a trial part of the ingredients used in the production of high heat resistant brazier tongue products The results of the experiment, 5 formulas, found that the corradialite plate development By using the saline, kaolin and sand parts for making corporaite plate products. The formula that is most suitable for use is Formula 1 with a mixture of 60 percent kaolin, 20 percent fine sand, 20 percent salt water, and a percent water absorption. 3.57 and the value is 71.62 kg/cm² By burning at 1200 degrees Celsius, which can withstand heat up to 600 degrees Celsius more than the original. The results were then analyzed to summarize the satisfaction level of the users of the cororite disc products. The number of 20 people had a high level of satisfaction (= 3.72 S.D. = 0.63)