Have you tried using the wax typically used to hold a GAs wafers and sapphire substrates? Clif >>> Francesco Ratti03/28 2:06 AM >>> Hi, I need to find a releasable wafer to wafer bonding in order to ship microstructures. What are the methods available. It seems that PB-Sn could be a good method but is difficult to deposit on the wafer. Is there some more easy material? thanks