The term 'make impressions' can refer to two different activities. The first is etching, which is the process of carving a design into a hard surface such as metal or stone. This is usually done with a tool such as a chisel or a drill. The second activity is stamping, which is the process of pressing a design onto a surface using a rubber or metal STAMP. Both of these activities are used to create an impression on a surface, and they are often used in the production of coins, medals, and other items.