A significant part of the knowledge used in the production processes is represented with natural language. Yet, the use of that knowledge

in computer-assisted decision-making requires the application of appropriate formal and development tools. An interesting possibility is

created by the use of an ontology that is understandable both for humans and for the computer. This paper presents a proposal for

structuring the information about the foundry processes, based on the definition of ontology adapted to the physical structure of the

ongoing technological operations that make up the process of producing castings.

The present article deals with the possibility of using the reverse engineering method for the production of prototype molds by Patternless

process technology. Article describes method how to obtain virtual model by using a 3D scanner. Article also explains principle of the

Patternless process technology, which is based on the milling mold cavity using CNC machining equipment. The aim of the research is the

use of advanced technologies that speed up and facilitate the process of production prototype mold. The practical result of the presented

experiment is bronze casting, which serves as a foot rest bracket on historic bike.