Using fixed 12 in. grinding stone in conjunction with 5.7 hp motor, PlanarMet 300 can remove up to 0.6 mm of material per minute. Central-force specimen holder accommodates up to 10 samples at a time and enables 3–4 grinding stages to be combined into single step, whereby amount of material to be removed can be programmed in increments of 0.1 mm. For accurate material removal, grinder offers timed-cycle or controlled material depth mode, with adjustable powerhead speed and direction of rotation.