Krom Chang Sip Mu or the Department of the Ten Crafts mainly comprised officials who were craftsmen. The name of the Department seemingly implies that this organization consisted of only 10 types of crafts. However, according to a poem written by Prince Pradit Worakarn, who served as chief of the Department of the Ten Crafts during the reign of King Rama V, the organization in fact covered 13 different categories: drawers, paper-makers, carvers. Modelers, sculptors, plasterers, lacquerers, metal beaters, turners, moulders, wood–carvers, engravers and carpenters.

A book on history of Prinec Prissadang explains the ten types of craftsmen and the Department of the Ten Crafts as follows:

     “The name Chang Sip Mu comes from “Chang Sippa” of the Pali language. This is similar to “Silpa (art)” in the Sanskrit language, which means art and craftsmanship. Thai people in the old days preferred Pali to Sanskrit, therefore, the word “Sippa” was commonly used instead of “Sippa”, which is popularly used today. Chang Sippa is, thus, similar to Chang Silpa ro Chang Silp, which means an artist. However, the word “Sippa” was later pronounced “Sip” for short. For this reason, “Chang Sippa” finally became “Chang Sip”. The word “Mu (group)” was later added to clearly identify the grouping of craftsmen”.

     There is no historical evidence showing that “Sip” represents the number 10. It is believed that “Krom Chang Sip Mu” was actually derived from “Krom Chang Sippa Mu”. Although officials working at Krom Chang Sip Mu were directly in charge of creating objects of art in response to the King’s wishes, the King himself did not reserve any one of them to serve him exclusively. He intended to recruit craftsmen of different types to be the prime force of the country in building royal palaces, royal regalia, royal vehicles, religious structures, places of worship, necessities for Buddhist monks and various public places. The King considered that it was his duty to contribute to the country and uphold Buddhism. He acted as a patron to various craftsmen, enabling them to contribute to the nation and the monarchy on a continual basis.