What are the best applications for heavy duty wood filler and how does it compare to other types of wood fillers in terms of durability and strength?

Heavy-duty wood fillers are best suited for large holes, cracks, and gaps in wood that require a strong and durable repair. These fillers are typically made of epoxy or polyester resin, which provide Excellent adhesion and resistance to moisture and temperature changes. In terms of durability and strength, heavy-duty wood fillers outperform other types of fillers such as water-based or solvent-based fillers. They are more resistant to shrinking, cracking, and crumbling over time, making them ideal for high-stress applications.