If you are in need of a portable sand blasting machine, you will have to consider several important factors before making your purchase. While some of the portable sand blasting machines operate in an open environment, others include an attached cabinet that houses the nozzle head and handles the cleaning process. These units usually have a 5-meter blast hose and are suited for freestanding objects. On the other hand, if you are working on a large or bulky object, you will want to invest in a sandblasting cabinet.