RTCM6 is designed for grinding pencil or OG edges on flat glass of different sizes and thickness. Grinding wheels simultaneously operate grinding. Coarse grinding, refine grinding and pneumatic polishing can be completed in a process. The front guideway can move. Front guide can be adjusted to fit various thickness of processed glass. In grinding operation, feeding and operation speed can be adjusted at random. (RTCM3 is used for processing 3mm to 10mm thickness glass.)