If I select an object and use UV Editor to apply a material/texture, all is good until I apply other materials to the other sides of the object. Then the original material/texture goes grey. I have read on this forum messages going back to 2015 saying this is a bug. Is this correct or am I missing something in the process of how to apply a material/ texture to one surface of an object?
Thanks,
Kim
Rhino 8 Mac
Version 8: (8.27.26019.16022, 2026-01-19)
Mac Studio Ultra M1 - OS: 26.2 (25C56)
No Plugins
Display: 2 Monitors have placed palettes and layers on 2nd monitor
Can you post a simple model before and after and explain your steps please? Sub-object material assignment is only supported for NURBS objects. You also need to sub-object select surfaces and then right click a material to assign to only that selection. The UVeditor itself is not used to assign materials.
Thanks for your help. I am attaching a file which for some reason, when I give different materials to different sides (it is a closed poly surface object ) I lose the texture image on one side.
The process that I followed was:
Highlighted each face on the closed poly surface object and went to the material palette right clicked to select a material to the object. Doing this for each face separately.
The one material I created was the one called Marquetry.
I then followed your procedure laid out in your video “Introduction to the UV editor in Rhino 8.
Everything goes according to plan as you can see in the attached screenshot.
But when I close the UV Editor the surface shows up as grey.
Apologies for the delay in looking at your file and video. The issue was that you had a Picture type material applied to that sub-object face and there was no texture in it. Picture materials are best for reference images anyways. The fix is to change the material type to Physically Based > add a color channel from detailed settings > assign the texture to that color channel.
Many thanks for your feedback! It was worth the wait.
As the drawing is part of the model as it determines where cut outs will be placed on the panel I have selected in the Properties>Display Mode>Rendered.
