Question about racks

[winophite]

I'm working on plans for some small racks, and I saw some pictures posted a while back, I think by Drew. My question is about materials. Ive seen 1x12's mentioned several times, which measure approx 11.25 inches in width. 1x10 boards measure 9.25 in. Bottles I've measured tend to be between 11.25 and 12.25 with necks of asst size. I wonder if 1x10's would be wide enough with the necks sticking out, or if there could be a stability issue. I'm thinking 14" space for cases at bottom, maybe 36 in for some diamond rak with a few shelves at top about 4+/- in apart. I have a couple 1x10 on hand but don't want to make something that may collapse! Maybe I'm over engineering, but with the price of pine...Thoughts? WP