Our reciprocating surface grinders can grind workpieces of up to 12? Wide X 24? Long X 12" in Height. We can grind square, rectangular, round parts and many other different forms. These machines can easily achieve flatness and parallelism of less than 0.0001 of an inch depending on shape of part, material, and material condition. Reciprocating precision surface grinding can produce surface textures of very fine surface finishes to course finishes as required.