How to build grinder machine grinding mill chinaow to build grinder machine using electric motorow to build grinder machine using electric motor as a leading global manufacturer of crushing, grinding and mining equipments, we offer advanced, reasonableet price and support online angle grinder hack make a cutter machine from.May 25, 2021 Portable Grinder. 2.5. 5. Flexible Grinder. 2.6. 6. Precision Grinder. Machines in which grinding wheels are fitted and grinding is done, such machines are called grinding machines. On the basis of their function, they can be divided into two parts.