Large area uplift. Rubber hammer is a hammer made of elastic rubber material. The purpose of rubber hammer is elasticity, and the damage to the hammer after hitting is very small. Rubber hammer can repair a large area of depression. First of all, if the depression is deep or the area is large (as the case may be), you can "pull" it out first, insert the glue stick into the glue gun and heat it for a few minutes, then evenly punch holes around the center, slowly hit it on the suction cup, and then use the residual temperature to gently stick the suction cup on the appropriate stress position of the depression.