Among the list of difficulties for a conventional three-axis machine is tips on how to engrave a pen, or other spherical objects. The U-MARQ GEM-RX5 delivers the best reply, through the use of genuine 4-axis performance; it's going to engrave 360 levels all-around a pen or other compact cylindrical objects. https://winbetngk13459.empirewiki.com/8869300/the_best_side_of_cnc_machine_tools