Hey Richard, you continue to amaze us all! I actually bought 3 brushes for 2€ a couple weeks ago. Two of them were wire brushes, which I wanted to use for getting more retention in styrofoam. Saw that trick on YouTube.
Now, seeing the wood effect you achieved, it feels like I got a million-dollar-tool in a dollar store.
I will try if I can do it, too, but I doubt it. The walls and floors you create are incredible! Man, just incredibly great!
Much respect, mate!