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This paper presents the research, design, and fabrication process of a 3D printing system using Digital Light Processing (DLP) technology, aimed at applications in casting prototype manufacturing for mechanical products. The printer is designed with a build volume of 250 × 150 × 200 mm and achieves an accuracy of 0.08–0.20 mm on the XY and Z axes. It employs a Full HD projector (1920 × 1080 pixels) and a 405 nm wavelength light source. The study provides an overview of resin-based 3D printing technologies (SLA, DLP, LCD) and analyzes commercial 3D printer models to select a suitable structural configuration. Functional modules were designed, calculated, and simulated to assess structural rigidity and kinematic stability. The control system is based on Raspberry Pi 3, Arduino Mega 2560, A4988 drivers, NanoDLP software, and Marlin firmware. After assembly and calibration, the machine achieved an XY-axis accuracy of approximately 0.1 mm and met the required layer height, with an optimal exposure time of 23 s for Dazzle EC08 resin [4]. The results contribute to the development of domestic DLP 3D printing technology, reduce production costs, enhance equipment autonomy, and promote the investment casting industry in Vietnam [1–3].

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Design and Fabrication of a 3D Printer Using Resin Based on DLP Technology

  • 会议论文

  • 发表日期：

    2026年

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  • Huu Nghi Huynh,
  • Thanh Duy Phan

摘要

This paper presents the research, design, and fabrication process of a 3D printing system using Digital Light Processing (DLP) technology, aimed at applications in casting prototype manufacturing for mechanical products. The printer is designed with a build volume of 250 × 150 × 200 mm and achieves an accuracy of 0.08–0.20 mm on the XY and Z axes. It employs a Full HD projector (1920 × 1080 pixels) and a 405 nm wavelength light source. The study provides an overview of resin-based 3D printing technologies (SLA, DLP, LCD) and analyzes commercial 3D printer models to select a suitable structural configuration. Functional modules were designed, calculated, and simulated to assess structural rigidity and kinematic stability. The control system is based on Raspberry Pi 3, Arduino Mega 2560, A4988 drivers, NanoDLP software, and Marlin firmware. After assembly and calibration, the machine achieved an XY-axis accuracy of approximately 0.1 mm and met the required layer height, with an optimal exposure time of 23 s for Dazzle EC08 resin [4]. The results contribute to the development of domestic DLP 3D printing technology, reduce production costs, enhance equipment autonomy, and promote the investment casting industry in Vietnam [1–3].