Associates materials with layers.
MATERIALATTACH (Command) Find
When you use Attach by Layer (MATERIALATTACH), you can quickly assign a default material to each layer.
Objects with a Material property setting of BYLAYER are displayed with the material specified for the layer.
The following options are displayed.
Lists all the materials Document Materials panel of the Materials Browser. Drag a material onto a layer in the Layer list to attach the material to that layer.
Lists all layers in the drawing and in any external references attached to the drawing. The material thumbnail shows which material has been associated with the layer. Click the Detach button (the X) to remove the material from the layer.