Аннотация:The effect of 3D printing conditions (sample position relative to the plane of the build plate, as wellas temperature, extruder nozzle diameter, and infill density) on the mechanical properties of polyethyleneterephthalate glycol samples has been studied. The main factor determining the elastic and strength propertiesof parts obtained by 3D printing is the porosity of the samples associated with the infill density and the orientation of the sample relative to the plane of the build plate during printing. Decreasing the nozzle diameterhelps to reduce porosity and improve the mechanical properties of the product, but increases the duration ofprinting