Butcher block workbench – First, scrape any debris or caked-on food from the workbench. Keep a paint scraper or other metal scraper at a 45 degree angle to the workbench. Scrape away from you, releasing food and dirt from the workbench. Second, attach 80-grit sandpaper to a sander. Move the sander over the table to remove stains and scratches. Start with higher sandpaper, if the table is badly scratched or dirty.
Shift grinder to a finer sandpaper. Sand the surface again. Continue switching the paper and sanding the surface of the butcher block workbench until you have a soft, smooth surface. Run your hand just above the table top. The surface should be smooth and free of bumps or dings. Combine one part paraffin with four parts of mineral oil. Work the solution into any cracks in the block.
The solution will fill the cracks. Allow to set in crack on the butcher block workbench. Scrape off excess wax with metal scraper. Wipe the table with vinegar to remove all grease and dirt from the surface. Place a small amount of vinegar on a clean cloth. Rub the table surface with cloth to clean. Last, dip a soft cloth or t-shirt in mineral oil. Rub a coat of mineral oil over the butcher block workbench. Wipe off excess oil.