HDF, or high-density fiberboard, is a type of engineered wood product that is similar to MDF, but is made using wood fibers that have been compressed to a higher density. This results in a stronger, more durable panel that is ideal for a wide range of woodworking and construction applications. HDF has a smooth and uniform surface, making it ideal for painting, laminating, and veneering. It is also highly stable and resistant to warping and cracking, making it an excellent choice for use in high-moisture and high-traffic areas. HDF is available in a variety of thicknesses, allowing for flexibility in design and application. It is also more affordable than many other types of wood products, making it a cost-effective option for those on a budget. Overall, HDF offers an excellent combination of strength, durability, and versatility, making it a popular choice for many different woodworking and construction projects.