@escapeartist said:
Is there any way you could share some tips to get that nice, buffed (but not too shiny) soft silver look with the wear scratches? It's very nice.
I started putting together a couple of screenshots and ended up turning them into a mini tutorial!
I should point out that the average size of the phone is 45mm x 95mm, and a lot of the work in this and the rest of the materials was ensuring the scale of the material was right for the piece!
This material was based on the silver available in the Metals Ashikhmin (mlt) library available at the Kerkythea website
![metals ashikhmin mlt silver.png](/uploads/imported_attachments/GEdM_metalsashikhminmltsilver.png)
the weighting of the layers is as follows
![OA setup.png](/uploads/imported_attachments/xr6D_OAsetup.png)
the anisotropic layer is left untouched
![anisotropic.png](/uploads/imported_attachments/ZgvX_anisotropic.png)
the only part of the matt/phong layer that is changed is the specularity
![mattphong.png](/uploads/imported_attachments/wCco_mattphong.png)
the real work in this material is the was in the specularity and the bump maps, bump map 1 was about making the metal seem imperfect and not perfectly flat (which is virtually impossible in the physical world and way too easy in the digital world)
![bump 1.png](/uploads/imported_attachments/jakD_bump1.png)
bump 2 was about creating the micro scratches which accompany any piece of silver
![bump 2.png](/uploads/imported_attachments/rX1w_bump2.png)
Its a good idea to save this finished material to your material library if you want to use engravings.
For the engraving I used a monochrome frame i sourced at openclip art, I mapped it in sketchup to ensure the dimensions were correct prior to exporting. In kerkythea, I opened the materials editor for the engraving and selected the diffuse label in the reflectance panel. In the texture editor right click on the engraving bitmap and copy it.
left click the preview panel and choose your new material as saved above and once it has loaded click apply, then in the empty bump mapping panel select 'texture' and in the texture editor right click and paste. kerky will place the engraving bitmap, correctly mapped, into the spare bump map slot. Next fiddle with the strength control until it looks right.
Alternatively you can convert your image to a normal map using GIMP (which is what I ended up doing eventually) and use that instead. if you start by exporting a mapped image kerky will remember the mapping, so it doesn't matter if you use a different version of the image.
I hope thats not too in depth, once I get on a roll, I tend to cover ALL bases!!