Annotation. The paper discusses a method of increasing the strength of 3D-printed structures made by the fused deposition modelling process, which consists in vacuum impregnation of printed products in a compound based on epoxy resin. Studied the number of pores in samples obtained by this method depending on the percentage of 3D printing filling and direction of layers relative to the axis of the samples. The porosity of the samples was determined by comparing the theoretical ideal density with the experimental value determined using the hydrostatic weighing method. As a result, it was found that the porosity of the samples lays in the range from 17 to 18.5%. It was also found that with increasing percentage of filling the porosity of the samples increases. It has been suggested that this dependence is associated with a complication of the processes of air release from samples during the impregnation.

This work is devoted to research of tribotechnical characteristics of 3D printed samples from ABS plastic. The results of determination of friction coefficient and depth of counterbody introduction into the sample surface on Tribometer TRB-S-DE-0000 are presented. The article also presents the advantages of using 3D printing for repairing machine parts and describes the causes of gear failure.

The results of a study on the strength of composite materials based on 3D-printed frameworks made using FDM technology from ABS plastic with a 33% fill are presented. The frameworks are impregnated with a thermosetting compound based on ED-20 epoxy resin with the TETA hardener, incorporating acetone diluents in amounts up to 1.5 wt % and DEG-1 in amounts up to 5 wt % to reduce viscosity.