NCIDQ IDFX Practice Exam

Why is quarter sawed lumber advantageous compared to plain sawed lumber?

1. It's cheaper to produce

2. It holds paint better and has fewer defects

3. It easily matches any log shape

4. It requires less time for cutting

The correct answer is: It holds paint better and has fewer defects

Quarter sawn lumber is advantageous compared to plain sawn lumber primarily because it holds paint better and exhibits fewer defects. The quarter sawing process involves cutting the log into quarters and then slicing those quarters at a tangent to the growth rings. This technique produces a more stable wood with a straighter grain, which is less prone to warping and splitting compared to the flat sawn method. Moreover, the uniform grain pattern of quarter sawn lumber not only enhances its aesthetic appeal but also enables it to absorb paint and finishes more evenly, resulting in a more desirable finish. This attribute makes it particularly suitable for high-end finishes in furniture and cabinetry where appearance is critical. While cost and cutting time are important factors in wood production, quarter sawn lumber typically requires more time and effort in the milling process and can be more expensive due to the yield of usable wood. Unlike plain sawn lumber, which tends to have more irregularities due to the presence of knots and variable grain patterns, quarter sawn lumber provides an enhanced quality that appeals to both manufacturers and consumers seeking durability and a refined look in their wood products.