Binderless boards were manufactured by one-step hot-pressing. Table 1 shows the manufacturing conditions for the five types of raw materials. The boards were 300 mm × 300 mm × 5 mm, and the target density was 0.8 g/cm3 . The manufacturing method was based on the study of Okuda and Sato (2004). All materials were hand-formed into homogeneous single-layered mats in a forming box. After forming, the mats were manually pre-pressed, and their top and bottom surfaces were covered with aluminum foil. The mats were then pressed with a hot-press machine under the condition shown in Table 1. Two boards were manufactured for each raw material.