The aim of this thesis was to produce a drawing documentation of two used tools for cereals manifacturing. This aim was possible to complate because of 3D scanning and reverse engineering technology. Theoretical part of this thesis describes reverse engineering, 3D scanning and rapid prototyping technology, mainly FDM 3D printing. Practical part of the thesis describes a proces of tools reconstruction in detail. Including dimensional analysis, 3D scanning, modeling parts in CAD software and also prototype manifacturing and production of drawing documentation.