Glass cutting with manual cutting, cutting machine, CNC cutting, error - cut is relatively large, CNC cutting error can be minimized, but the corresponding costwill increase. Error of general electronic products, glass requirements should be small, so is the use of machine cutting or cutting error CNC, other furniture glassand architectural glass can be slightly larger point, error in about 0.5. In addition to cutting can have an impact on the glass size, edge grinding can also have an impact on the glass size, precise grinding machine for glass size has a certain impact accuracy. The better machine grinding out the size is accurate.