Squeezing from the upper side of a sand mold is not an efficient method of compacting the sand in the bottom part of the mold, which is critical to the quality of the casting. On the other hand, bottom squeezing, though efficient for compacting the bottom sand, causes other problems such as necessity of changing pattern plates or difficulty of controlling the squeezing pressure. The authors invented a new molding process named “pattern squeeze molding”, in which the molding sand is squeezed from the both sides, eliminating the problems encountered in the conventional processes. An experiment was made to compare the efficiency of the method with the conventional methods such as jolt-high pressure squeeze or air flow squeeze. It was concluded that the pattern squeeze is more efficient in compacting the mold than the other methods. Results of measurement showed that the distribution of pressure on the pattern faces in the pattern squeeze method is more uniform than that by the head squeezing method.