sometime long and thin plates when you tap it down on parallels you are actually bending it flat but it will spring back when unclamped.
some people try adhesive to a thicker plate. For example there are sticky waxes that will glue things together but the glue bond can be broken by reheating and or dissolve the glue in solvent like alcohol. Often this is used for holding glass lenses so they can be ground and polished to shape.
you want to glue together similar metals. For example I once used a hot melt glue gun to stick aluminum to steel once. It seemed very strong even when the plates were still a little warm. I cooled it in cold water. The plates fell apart. The difference in expansion of the 2 metals broke the glue bond.
Obviously when machining you need to also watch the plates do not get so hot that the adhesive melts and the glue bond fails. |