Vibration: the difficulty to tightly gripThin = > accurate hardly deform, ease of forming defects.With products like the figure then split the mold in 2 plates will have 1 plates is thin.
Vibrations: difficulty in gripping Thin => easy deformation, difficult to correct, easy to form defects. With the product as shown in the second mold when the mold plates will be 1 is a thin sheet mold.