Double side lapping, providing simultaneous machining, offers both parallelism and flatness in micron units. Double side polishing, adding to the parallelism and flatness obtained during lapping, finishes both sides of the workpiece in a high precision mirror finish. SpeedFam's line of mechano chemical polishing units feature a 4-axle independent drive mechanism. SSG processing utilizes soft grinding stone to simultaneously polish both sides of soft aluminum materials, while diamond pellet machines, using a fixed abrasive system which allows for clean processing, provide highly efficient grinding and high-precision double side lapping. Workpieces: Crystals, Ceramics, Ferrite, Piezoelectric Elements,Carbon, Metal, Super-Hard Materials, Glass, Copy Mirrors, Photomask, LCD Glass, Glass Disks, Hard Disks, Aluminum Parts, Aluminum Disks, High Precision Aluminum Parts, Silicon Wafers, Oxide Wafers, Compound Wafers Display method for SpeedFam DSM models