[header] How to darken wood [title] Set up your workstation in a well-ventilated area. [step] Lay down tarp or newspaper to catch wood dust and stain drippings. If you're working inside, open up any windows and use a box fan for air flow. 
[title] Sand the wood using 120-grit sandpaper. [step] Sand in the direction of the grain to avoid leaving scratches on the wood's surface.