How do I remove faces from a materials group?

Some of my faces appear to have decided that they are part of two materials groups at once, how do I remove them from one of the materials groups?

in F9 you need to select a group then remove it
then de select the face you don’t want included and re assign to the group you want!

hope it helps

happy 2.5

There isn’t a remove button though, there’s just the New, Delete, Select, Deselect and Assign. Where do I find the command to remove?

There is no remove button because all faces have to belong to a group. If there is no material assigned to the object then it has one blank material that just renders white. If you add one material index (F9) (or add a material) it will automatically assign it to all faces. You have to have a minimum of two groups to actually assign to individual faces. There is no such thing as “no group”. So selecting the faces and assigning them to another group is the option you have to remove them from the existing one. You can use the arrows to toggle though the groups to find and then assign it to the one you want.

Here’s what I’m looking at, and as far as I can tell, those faces are being part of two different materials groups. How do I fix that?

http://i95.photobucket.com/albums/l152/sand303/3D/Materials1.jpg

Reassign the material you want in that area. Hopefully this “resets” the assignment. You can also reduce the number of users of the material to 1 for each material and the reassign.

I’m not sure I understand the second thing you said, “reduce the number of users of the material to 1 for each material” is this a setting I change somewhere?

That looks like a bug. Or you have overlapping geometry. As far as I understand it, the users would be objects.

http://wiki.blender.org/index.php/Doc:Manual/Materials/Multiple_Materials

Material Users
In the Material select scroll box that shows all the materials in your scene, a number to the right of its name shows the number of objects that share that material. A zero means that the material is unused and readily available without affecting any other objects or faces.

A material index can not overlap.So there is no remove.

But one thing you can do is go into Object mode and delete the Material Indexes and start again.

Deleting a Material Index

Take your object out of edit mode. Select the material index slot using the scroll buttons in the material Index display. To delete this index, click the Delete button. Clicking this button disassociates the material with the mesh. It does not delete the material definition from the .blend file, but simply crosses it off the list for that particular object. Any faces of the mesh that may have used that material index will be re-assigned the default material (index/slot 1).

This question perfectly highlights the need for attaching blend files to your posts.
Rather than jumping through hoops figuring out the answer, these support questions can usually be answered very quickly if you have access to the file.

Agreed. It should almost be the standard to post an example in the form of a blend file, even if it is just a partial file outlining the problem. Saves a lot of time in getting answers back to those who need them.