... machine can do high-quality etching works of metal plate and workpieces clock hand engraving machine /etching machineJM650 Double Sided ... typeDouble etching,Swing systemWorking TemperatureAbout 38~45°CHeat SystemTitanium,3KW Vertical Pump4KW/PC, * 2 unitsEtching Speed0.5~6.5 ... sieves, meshes, SMT, choppers, encoder, disks,PCB,clock hand,a lot kinds of metal spare parts and so on. Machine Picture ...