Flex and hold when drawing curves
When laying out a curve on a workpiece, we usually know its approximate distance between the endpoints of the arc and its rise, or height. But trying to figure out how to effectively clamp a thin, flexible strip to form the curve can be tricky.
To make this process easier to manage, I make a two-part fairing strip to use for tracing the curve. Start with two thin strips of hardboard or hardwood. Place the strips face-to-face and join both ends with a strong tape. Between the strips, insert a thin spacer block. (See the drawing above for sizing the width of the spacer.) This creates an adjustable fairing strip that stands up on its own, has a convenient handle, and stores flat.
—Keith Kroma, Menomonie, Wis.