Which lpi pattern is not regarded as decorative checkering?

The lpi pattern designated as 20 is not regarded as decorative checkering. Decorative checkering typically employs finer and more intricate patterns that not only provide grip but also enhance the aesthetic appeal of the wood. The pattern represented by 20 is generally considered too coarse for decorative purposes and is more aligned with functional checkering that prioritizes grip over design.

In contrast, patterns like 10, 30, and 15 feature finer lines and a closer frequency which allows for greater detail and visual interest, subsequently qualifying them as decorative options. Understanding these distinctions is essential when selecting patterns for projects intended to exhibit both functionality and beauty in woodworking.