Thanks for the links ausf. Looks like I will be getting some iron oxide, along with the Metalcote and some metallic paints to try some various techniques and combinations.
For the wood, I saw a technique on YouTube that involved roughing up the surface with course sandpaper or sanding stick, painting a light base coat, followed by a couple coats of darker paint dry brushed to highlight the details, followed by a wash with one of the darker colors used previously. The effect was pretty convincing.
I think I will be getting various paints and see what looks best for the tools.
Steve