Hi, I've been facing this problem in my model. I apply material on an object "A" and it gets applied to random another object "B" as well. I try to change the material of object "B", but it changes the material of object "A" as well as if they're part of one group. But the fact is objects are neither attached, nor grouped. E.g. Bed sheet texture gets applied to curtains as well. Staircase wooden texture applies to floor.
I noticed in your video that you applied a material while in sub-object mode. I do not recommend doing that, as you can inadvertently create Multi/Sub-Object materials. What may be happening is that your objects are sharing MSO materials and by applying a material in sub-object mode, that MSO is changing the order of the sub-materials and therefore affecting which material is being used on the various objects.
If you use the eyedropper to load the applied material back into the Material Editor, does it show a Multi/Sub-Object material in use? I'm guessing so. Reapply your materials without being in sub-object mode, and be sure you are only applying the single material and not an MSO material.
I do recommend using the Slate Material Editor as well. There is a menu called Scene Materials in there that allows you to "Filter Selected" and only show what is applied to your current selection. This is a quick and easy way to see if you've accidentally created an MSO. Check out my AU2017 class "Slate Material Editor: Don't Be Afraid!" for some other tips; http://au.autodesk.com/au-online/classes-on-demand/class-catalog/classes/year-2017/3ds-max/as120466#...
Chris Medeck
Did you find this post helpful? Feel free to Like this post.
Did your question get successfully answered? Then click on the ACCEPT SOLUTION button.
