I am starting a Adm. Hipper class ship. I used 3/8" ribs on a Bismark I built years ago. Can I use 3/8" again for this or would 1/4" be better? Or does it even matter and go with one or the other? Question 2: When I calculate the spacing between ribs is that expected to be between centers or from edge to edge so the actual window is that calculated size?
