Automatic multi-spindle belt polishing machines for the execution of round and flat edges on any type of material (marble, granite, composite and cement agglomerates). The range of GMM edge polishing machines includes horizontal and vertical machines able to process thicknesses from 4.5 up to 100 mm. The shaping of the profiles is performed with universal abrasive wheels (avoiding the use of expensive shaped wheels). The machine management is entrusted to an electronic control of the latest generation (operating in 4.0 ready logic) supported by a SW entirely developed by GMM to ensure an easy and intuitive use to the operators. The oscillating bar (which supports the hydraulic motors with the abrasives for polishing) of the Toro bull-nosing machine, is driven by 2 brushless motors in order to guarantee high precision and best quality of the profile. All surfaces are treated with sandblasting, cold galvanizing primer and two-component painting. All the carters are in fiberglass or stainless steel.