Plywood Board

 is a plank.

Obtaining

 * Crafted by a Lumberjack (Lv. 20) from
 * 10 Ash Wood
 * 1 Worm-Ridden Wood

Uses

 * Used in the craft of
 * Derma Tho
 * Shrubstrate
 * Treechnid Shield
 * Quest
 * A Touch of Madness in Astrub