Free for personal and commercial use ~ no attribution nec.
1. The fully editable layered PSD you see in the picture
2. The layer styles used for the effect in an .asl file
3. And a .pat file that contains the tileable wood pattern used in the background.
More of our layered PSDs here: [link]
This effect works great for icons too! See our icons website for roughly 2000 icons in this style: [link]