<p>This paper uses fused deposition modeling methods to investigate the effects of nylon reinforcement on the mechanical characteristics of carbon fiber. The influence of three fused deposition modeling parameters in the bed temperature, nozzle temperature, and outer thickness on mechanical properties was investigated experimentally. Mathematical equations were established, and tests were conducted using experimental design to examine the influence of these parameters. The ANOVA approach is used to guarantee the precision of the mathematical equations. The microstructure behind the cracked specimens was examined using scanning electron microscopy. Tensile strengths of carbon fiber nylon composites range from 22.75 to 32.65 N/mm², flexural strengths from 20.12 to 25.89 N/mm², and impact strength from 0.37 to 0.71&#xa0;kJ/m². Infill gaps, pullout, pores, a cavity, smearing, accumulation, deformation of layers, delamination and infill particles, holes, clusters, and breakage are characteristics of fractured composites. The objectives of the study were to investigate the influence of key process parameters, such as nozzle temperature, bed temperature, and layer thickness, on the mechanical properties of carbon fiber nylon composites. The study aimed to determine how these factors affect tensile, flexural, and impact strengths. Additionally, it sought to optimize the FDM process for enhanced composite performance.</p>