Outdoor tables are exposed to harsh weather conditions, which can lead to hairline cracks over time. To prevent this, start by choosing high-quality, weather-resistant wood like teak or cedar. Apply a protective sealant or oil regularly to maintain moisture balance and prevent drying. Avoid placing your table in direct sunlight for extended periods, as UV rays can weaken the wood. Use a waterproof cover when not in use, especially during rainy or snowy seasons. Lastly, clean the table gently with mild soap and water to remove dirt that can accelerate wear. These steps will help preserve your outdoor table's beauty and durability for years.