Research on the Status of Quality Improvement of 3D-Printed Products

3D printing, also known as additive manufacturing (AM), has emerged as a transformative technology that contrasts with conventional subtractive methods by building objects layer-by-layer from digital models.Since its development in the 1980s, it has revolutionized industries such as aerospace, healthcare, automotive, and consumer goods by enabling rapid prototyping, customization, and complex geometries with minimal material waste.Despite its advantages, challenges like thermal deformation, surface roughness, dimensional accuracy, and biocompatibility in medical applications hinder its broader adoption.Addressing these quality issues is crucial for improving performance and expanding industrial applications.This review examines recent advancements in 3D printing techniques, analyzes persistent limitations, and explores future trends, highlighting its role in sustainable manufacturing and next-generation production technologies.Understanding these developments is vital for researchers and industries seeking to optimize 3D printing for highprecision and functional applications