Complete Guide To Sawmills | What Is A Sawmill How Do ...
Sawmills usually plane dimensional lumber to specific sizes and smoothness standards. For instance, a roughcut 2×4 coming from a head rig is exactly that nominal size — 2 inches thick by 4 inches wide. But, a 2×4 exiting a sawmill''s downstream planer actually measures 11/2 inches by 31/2 inches finished size.