Draw curves with a hose clamp
I like to use turn-key style hose clamps to draw round profiles on the corners of my cutting boards. They are easy to find in hardware stores, and the wing-nut tightener makes it easy to dial in any curve. This is also great for matching a curve on a piece you wish to duplicate. I use an SAE size 48 clamp (3-in. nominal diameter) for most of the work I do, but with so many sizes available, your options are almost limitless.
Bart Brinkman, Post Falls, ID