This study focused on optimizing the digital light processing (DLP) 3D printing process for high-precision ceramic components using alumina-based slurries. Key challenges, such as cracking during debinding and precision loss due to slurry sedimentation, were addressed by evaluating the exposure time and the nano-to-micro alumina powder ratios. The optimal conditions—exposure time of 15 seconds and a 1:9 mixing ratio—minimized cracking, improved gas flow during debinding, and increased structural precision. Microchannels with diameters above 1.2 mm were successfully fabricated, but channels below 0.8 mm faced challenges due to slurry accumulation and over-curing. These results establish a reliable process for fabricating complex ceramic components with improved precision and structural stability. The findings have significant potential for applications in high-value industries, including aerospace, energy, and healthcare, by providing a foundation for the efficient and accurate production of advanced ceramic structures.

1. Introduction
2. Experimental Section
3. Results and Discussion
4. Conclusion
Funding
Conflict of Interest
Data Availability Statement
Author Information and Contribution
Acknowledgments
References

• 조준민(한국세라믹기술원 이천분원) | Jun-Min Cho (Korea Institute of Ceramic Engineering and Technology (Icheon), Gyeonggi-do 17303, Republic of Korea)
• 서용준(한국세라믹기술원 이천분원) | Yong-Jun Seo (Korea Institute of Ceramic Engineering and Technology (Icheon), Gyeonggi-do 17303, Republic of Korea)
• 한윤수(한국세라믹기술원 이천분원) | Yoon-Soo Han (Korea Institute of Ceramic Engineering and Technology (Icheon), Gyeonggi-do 17303, Republic of Korea) Corresponding author