Patina / stain

Yesterday I finished modelling a sword:

http://www.fylo.net/stuff/iyarill.jpg

What I want to do for the grip material is have a darker brown cloud texture embedded in the grooves, fading out to the solid bone color in the middle of the sections. Anyone know how to do this?

Use a black and white stencil texture mapped to have the white part where the grooves are.

Here’s the effect I’m going for, which I added in Photoshop. I’m hoping this is possible without UV mapping or anything like that, but still completely within Blender. The grip isn’t a spiral, it’s a subsurfed and proportional edited cylinder, duplicated and joined back into a single mesh. As such, there are unseen faces within the mesh right now that form the top and bottom of each cylinder. I have no problem with breaking the sections into separate meshes or cleaning up the extra faces within the single mesh.

http://www.fylo.net/stuff/iyarill_stain.jpg

The ridges look fairly uniform and have an even distance, tweaking a wood procedural texture might do the trick here without UV mapping in this case.

This would work if the ridges aren’t spiraling down, otherwise you may have to make a stencil by hand.

After much trial and error (15 texture images), plus some judicious set smooth, CyberDragon’s first suggestion did the trick. Here’s the result:

http://www.fylo.net/stuff/iyarill_textured.jpg

Now all I need is to find some good settings for the gold and the gem materials.