Currently, the equipment lines of resin 3D printing technology are classified based on two main characteristics: technology openness and production scale, including open source, closed source, desktop, and industrial models. In particular, the open-source desktop 3D printer is being researched by many scientists for manufacturing end products, thanks to advantages such as low equipment costs, the use of a variety of materials from multiple manufacturers, and stable operation, which makes it easy to access and use. However, the biggest disadvantage affecting the product quality of this equipment depends on the operator’s experience and the selection of technological parameters. Therefore, to operate this equipment effectively, the most important consideration is the support structure, which is an essential component of 3D printing. An improper support structure can increase fabrication time, lead to higher material usage, cause warping during the fabrication process, or result in damage when removing the support during post-processing. Thus, studying structural corrections for support is crucial for the improvement and development of resin 3D printing technology. This paper proposes a method for optimizing the support structure by adjusting the manufacturing direction parameters to eliminate the warping phenomenon of the product. The results of this research contribute to enhancing manufacturing capabilities, gradually facilitating the broader application of resin 3D printing technology to meet the increasing production demands in Vietnam.