Here's one panel in progress, where I straightened each line as I went. The stock surface is not as curved as your example though.
I don't have a photo to hand of the panel cut to full depth and finished.
Edit: Actually, now that I've posted the photos I see it looks like the bottom lines are curved. They're not actually curved with the stock in hand, but it shows how much the viewing angle can change the perception.
Bookmarks