Engraving is considered to be the most expensive out of all the printing methods. Also, it takes a lot of time to get it implemented. When it comes to the making of royal invitation cards or business cards of high-ranking officials, engraving is the most commonly used printing method. The image is first engraved by a hand or machine on a metal plate. Thereafter, the engraved design is filled in with ink and a paper is pressed on it. As a result, a three-dimensional kind of crisp image can be obtained. Such results are difficult to produce by using other techniques.