When starting to practice at a company located in Majalengka Regency, Leuwimunding District, several problems were found, one of which was how the inner free cutting bhusing machining process was and what code program was used. There are two machining processes when making bhusing inner free cutting, namely CNC lathe and Milling. Based on the process of making bhusing inner free cutting, this practice has the aim of knowing the machining process and making program codes on a CNC lathe. the methods used in this practical work is the process of observing, summarizing, and recording data from sources and hard copies of PT. Amanah Jaya Persada. After doing the methods systematically, he got some results from work practices, including being able to make an analysis of the CNC machine and understand a setting then understanding the controller and knowing the milling process used in the making process using internal cost cutting.