Additive manufacturing, or 3D printing, technology is progressing in material adhesion, precision, and a high degree of cooperation. It can combine many parts, taking into account cost, production, and other issues. This work focuses on the manufacture of wind turbine blades using 3D printing techniques and quality improvement to generate power. There are several parameters that are to be considered in additive manufacturing, such as layer thickness, shell, infill, print speed, travel speed, and temperature. The infill percentage plays a key role in determining the mass and strength of the product and optimizing the manufacturing cost and time. The lower infill reduces the material requirement, but from the geometry strength point of view, it has to be analyzed. In this work, additive manufacturing of wind turbine blades using polylactic acid (PLA) and acrylonitrile butadiene styrene (ABS) materials with various infill conditions is considered. The mechanical properties of both materials with various infill conditions are predicted using an open-source program. The mechanical properties at various infill conditions are applied to the wind turbine blade geometry by finite element analysis (FEA) using commercial software. This technique reduces the time and cost of manufacturing the wind turbine blade in a 3D printer. The results obtained from FEA can be optimized, and the wind turbine blade can be manufactured for the optimized infill condition.