Thesis theme is DLP (Direct light processing) improvement of the stereography 3D printer; that was developed in laboratory. Indispensably, the production of a new basin bottom was necessary. In the vat, we installed temperature sensors that will determine temperature sensors that contribute to the best print quality of the products. Necessity was to attach new protective glass to a printer that better surrenders light in UV (Ultraviolet wave) to the spectrum according to previous case. Suitably protection of printer's working range against UV light from surroundings is necessary. The last part of all components suitably installation and a test activity is the final step.