In this follow-up video tutorial, we use InstaMAT\u2019s nPass graph to take mesh UDIM unwrapping to the next level. Each npass iteration targets a different material section, unwraps UVs, and places shells into UDIM tiles automatically.<\/p>\n
\nIn this video, we cover how to turn the manual \u201cunwrap one section, then repeat\u201d process into a reusable nPass-driven workflow. You\u2019ll see how to iterate through a mesh\u2019s material sections, accumulate results into a single combined output, and translate UVs per pass so each section lands in its own UDIM tile (instead of stacking shells in 0\u20131 space).<\/p>\n
We also cover how to make the graph self-terminating so it stops automatically once it has processed every material section and how to organize the UDIM layout into a practical grid by exposing a simple control for the maximum amount of tiles per row.<\/p>\n
By the end of the tutorial, you\u2019ll have a self-contained, drop-in node: plug in any mesh, set your layout controls, and get back a single merged mesh with clean, non-overlapping UDIMs\u2014ready to reuse in future projects without rebuilding the graph each time.<\/p>\n