With the twisting action of a curved staircase you can't use a straight piece of wood! It actually is a long bowed looking piece of wood that I cut out of a piece of skirtboard mat'l. And on a tight radius I'm left with only about 7" of mat'l. left. I should clarify that I'm building a curb wall and not open treads and risers! The only bending plywood I've seen that is smooth and paintable comes in 4x8 sheets. Which I could use, but I was concerned with the joint, where the 2 pcs. would meet, not transitioning smoothly.
Last edited by jyswope75; 05-07-2008 at 11:00 PM.