Hi All, We have 8" thinned wafers tape bonded to glass carriers (without notch), so a little thicker and heavier than a normal 8" wafer, 25 to a crystalpak. The crystalpak cassette has a 1/4" (6.25mm) spacing from the centre to centre of each slot. We have observed some contamination on the mems due to manual handling so we are having a rethink. We have tried some mechanical pistol tweezers but have had also seen cracks the glass carrier caused by the locating tweezer pins. Does anyone have any generic wafer handling guidelines that they would like to share? Does anyone have any recommendations for a vacuum wand body/tip that will fit down between the wafers for manual load/unload? thanks and regards, Matt