Crystals With Cyclops: The crystals are not clamped in the machine, so there should be no risk of damage due to pressure. However, this AR coating is a high temperature (600F / 315C degrees) process in a vacuum chamber. There *is* a risk that the glue joint could fail during the coating process. My AR company doesn't know how high this risk is, either. So this is something to be aware of!!!
That said, anyone who does lose a cyclops during the coating process would have the opportunity to buy a replacement from me when the 7mm cyclopes are available early next month