Thanks for your input, I agree with you in general, and I really don't want to open the can of worms that is discussing packing.
However, I was talking about lining up the panels on a rig with millimetre precision every time, so that an intricate pattern that spans them, lines up exactly right. I'm hesitant to get such a thing made, it will probably not look as good as intended. I'll probably get something simpler.