Hey, recently have scanned and turned into a set of seamless 4k alpha brushes 15 wooden surfaces. All of there were added to my alpha brushes material library: https://gumroad.com/l/Ussdw
Similar to my MATERIAL LIBRARY, this one is also a life-long* access service to existing and any future sculpting assets to be added. Currently the library contains '60' ZBrushes and '54' 4k 16 bits seamless alphas which can be useful to sculpt rocks on your 3d models using either blender, zbrush, substance painter, 3d coat, etc. and is growing :)
I have found these brushes helpful when working on any photorealistic organic highpoly wooden propping. Attached a quick preview video to show them in action. Each brush is purely photogrammetry based with all pros and cons of that.
Brushes are compatible with ZBrush version 2020.1.4 and higher.
I used my standard workflow to make each brush. I scanned exact surfaces with the camera, turned them into around 100mln poly heavy meshes, baked them into texture sets, tiled them and picked/tweaked the height map to remove excess of noise and glitches so it works fine as a BRUSHes.

Brush preview for Brushes - 'gb_wood' pack (https://gumroad.com/l/Ussdw)

Brush preview for Brushes - 'gb_wood' pack (https://gumroad.com/l/Ussdw)
Quick video example in ZBrush with some of these brushes used.

All these wooded brushes were added to my 4K Alphas and ZBrushes library:
https://www.artstation.com/artwork/q9xeme