Plane one side true and mark (0) for the “working face.” (A surface is said to be true when it is perfectly straight across; straight lengthwise, and free from twist).
“Side” here used means one of the wider surfaces in distinction from the narrower surface, the edge.
Methods for testing the surface with parallel strips, etc., will be shown by the instructor.
SECOND.
Plane one edge perfectly straight lengthwise, and square to the face side. Mark this edge for the “working edge”; use the try-square, [Fig. 29], to test the work.
Fig. 42.
THIRD.
Set the gauge, [Fig. 42], to the width given in the drawing, and gauge a line from the face edge on both sides; then plane to the gauge lines.
