The article discusses the current technology of three-dimensional modeling and the prospects for their implementation in the structure of the modern system of training future specialists in vocational education in the field of informational technology. The problems are actualized and an algorithm for three-dimensional modeling and printing is proposed by modern modular type software, in particular, the features of using the basic core of geometric design and software preparation of the model for printing. The purpose of the article is to disclose the algorithm for three-dimensional modeling and printing of spatial objects for forming the practical skills of future IT specialists of professional education. An algorithm for the formation of practical skills of students in hardware preparation and calibration of 3D printers, the adjustment of the main technological parameters of work, preparation for the manufacture of a spatial model is proposed. The developed algorithm contributes to the formation of practical skills of modeling and printing three-dimensional objects of future IT-specialists in vocational education, contributes to the formation of their professional competencies, makes it possible to foster sustained cognitive interest, creates the need for self-education and in systematic improvement of knowledge and their creative application in practice.