TomP":tyw60ojd said:
they want it to look like un finished timer that has aged over time, if that helps
I think a multi-step process gives the best (most convincing) results if you're starting with fresh wood. First texture the surface, next turn the wood grey, then get the recesses darker/dirty looking. This is one of the standard routes used by miniaturists, who can make even something as characterless as white plastic look just like aged wood.
You can texture the wood in various ways, e.g. using a wire brush, a wire wheel in a drill, sandblasting, rubbing with coarse steel wool, or some combination of those, depending on the species and the level of texture you desire.
Greying the wood can be done with commercial grey stains, a steel 'n' vinegar solution (you might need to treat the wood with a tannic solution to get the colour you want or to get it uniform, depending on species) or using paint.
Final step is a dark or grungy wash (very heavily diluted paint), which is usually brushed on liberally and then the excess wiped away with a clean cloth.
You can take the effect way further but done well just these three steps can give a really good effect in relatively short order, certainly good enough for viewing at a distance.