Flattening one face of the stock is an essential step if you are working with ____.
A) S2S
B) roughsawn lumber
C) dual surface lumber
D) particle board

Question

Quizplus · Accepted Answer

Roughsawn lumber typically has uneven surfaces that need to be flattened before further woodworking can be done. S2S and dual surface lumber are already planed and flattened, and particle board is already a flat and uniform material.

Flattening One Face of the Stock Is an Essential Step