Here are some tips on how to distress wood, making new lumber look old. First, trim off machined edges with a hatchet. Then with a variety of scrapers, wood chisels, and awls, create the look of years of wear by giving imperfections to the wood face. By using these methods, you can add an antique finish to beams, doors, and woodwork.
For more on woodworking, consider:
11 Ways to Use Salvaged Wood in Your Home
5 Easy Woodworking Projects for Beginners
How To: Distress New Beams for a Century-Old Look