I found a new saw today and just as I was about to pay, I looked over to the book shelf and saw this. From what i've read so far, it focuses on Marc's personal experience with the tools. It'll be great to have a resource that focuses on the experience of using tools and hopefully speed up some of my processes. I'm looking forward to using both!
I have paths in my attic all the way around the vaulted ceiling great room . Plywood across 2x4's stretching through the trusses. 2 sets of attic stairs, lights on switches and shelves all over the place !
You could stiffen the edge with no apron by adding a second layer underneath to build it up.
A top that size and shape does seem to want a seam or 2 but being Asymmetrical it might look funny no matter how you build it.
3 layers of 1/4 ply would be balanced, orient the center sheet 90 degrees to the face layers. You could even use some birch, maple, whatever for the center layer. Clamping without a vacuum bag is a whole nuther discussion ! You could use mine but it's a hell of a drive.