Precision in Every Turn: Designing for Fit and Threads in HP Multi Jet Fusion 3D Printing
1. Introduction
HP Multi Jet Fusion (MJF) technology has revolutionized additive manufacturing, offering unparalleled precision, speed, and material efficiency. However, achieving the right fit and reliable threading in 3D-printed components remains a critical challenge. Engineers must carefully consider tolerances, thread design, and post-processing techniques to ensure parts that assemble seamlessly and function effectively.
This white paper explores dimensional tolerancing for fit and best practices for designing threaded features in MJF-printed parts, including printed threads, machined threads, and threaded inserts.
2. Understanding Fits in HP MJF 3D Printing
2.1 The Role of Tolerancing in 3D-Printed Fits
Dimensional tolerancing ensures that mating parts fit together without excessive clearance or interference. Unlike traditional machining, additive manufacturing processes introduce variability due to factors such as material shrinkage, powder spreading, and thermal expansion.