Quote Originally Posted by sossol View Post
I grew up thinking those were called furring strips.

If the curve isn't too great or very long, cardstock such as matboard and masking tape works.

Neil
That's a great tip! Anything that's manufactures, I think, is going to be better than wood. I've seen people use thin strips of wood and I gasp. Wood is so inaccurate that I'm nervous to use it as a straight edge, let alone hope that each fiber and grain is going to bend uniformly.