A type of concrete block used in a building construction is called hollow block. Both internal and external blocks walls are made using the large blocks with a high load-carrying capacity. The production of these blocks demands a hollow block making machine and raw materials, such as sand, volcanic ash, granite rubble, expanded clay, sawdust, etc. The machine produces hollow blocks, so that they are light in weight and do not add weight to the building structure. The fast hollow block making machine has a high production capacity.