MOTM

I've got my walnut boards, and I'm waiting for the flat rails. I've 
got a question though. When the panels are mounted on the rails, will 
they have any gaps in between them? I love the look of my MOTMs all 
tight  together, so they appear to be one big unit. I wouldn't want 
any visible little cracks dividing them up. 

Thanks,
Joseph Casbarian