This scientific paper will cover the process of creating two 3D objects, accompanied by a brief history of 3D printing technology, designing the model in CAD software, saving in appropriate format supported by the 3D printer, features of technology and the printer, materials from which the object can be made and examples where the products created by the 3D printing process can be applied. The printing of models was made by the studio "Xtrude Design & 3D Print" in Skopje. Two 3D models have been printed. A creative model of intertwined 4 triangles in STL file format has been made, which will be transferred and printed with PLA material. The model with the heart on the stand is printed with popular FDM process also with PLA material which is biodegradable and environmentally friendly. Both models are printed on Anet A8 3D printer. Different printing times, layer thicknesses and cost price of producion we have in our research.

In this paper is presented an virtual environment of a real model. Here are given all analyzes for making and vizualization of virtual environment in Quest3D. All analyzes of performance of the system in real time is presented.We described advantages and disadvantages of interactions in virtual environment and made a critical analysis on a rendering speed and quality on different machines.

Scientific visualization in technology of virtual reality is a graphical representation of virtual environment in the form of images or animation that can be displayed with various devices such as Head Mounted Display (HMD) or monitors that can view threedimensional world. Research in real time is a desirable capability for scientific visualization and virtual reality in which we are immersed and make the research process easier. In this scientific paper the interaction between the user and objects in the virtual environment аrе in real time which gives a sense of reality to the user. Also, Quest3D VR software package is used and the movement of the user through the virtual environment, the impossibility to walk through solid objects, methods for grabbing objects and their displacement are programmed and all interactions between them will be possible. At the end some critical analysis were made on all of these techniques on various computer systems and excellent results were obtained.

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Creating 3D vehicle model is complex process that requires basic knowledge of polygonal modeling.In this research, environment map is used as lighting with HDRI image.The final process of converting 3D scene to 2D image is called rendering.Image data will be obtained in four ways with various toolsets used in 3ds Max. They are: Scaneline, V-Ray, Mental Ray and Corona Renderer. At final step was made critical analysis on all of these techniques on the same computer system and excellent results were obtained.