<p>This study examines the mechanical properties of metallic parts produced through 3D printing with a composite filament containing metal powders and polylactide (PLA). The filament comprises 90% copper powders and 10% PLA by mass (or 56% copper powders and 44% PLA by volume). After printing, the specimens are heated and sintered in a high-temperature kiln, following specific recipes. During heating, PLA decomposes and combusts, enabling effective sintering in the subsequent phase. This approach offers a significant cost advantage over traditional 3D metal printing methods. However, the mechanical properties of the resulting metal have been less explored. Thus, this study evaluates key properties, including hardness, Young's modulus, abrasion resistance, corrosion resistance, and thermal conductivity, alongside surface morphology. Two heating recipes are tested, and their effects on the specimens' surface morphology and mechanical properties are analyzed. Although cost-effective, the process is energy-intensive, particularly during the heating phase.</p>