The product I'm considering is NOT wood. Plyboo is made from Bamboo....a Grass. This stuff, at least the samples I have seen is basically a manufactured product and void-free. Even better than Marine Plywood, from that regard.
We got piece of gear once at work, shipped to us on a plywood pallet. It was maybe 20 ply / 20mm or so. That piece was fought over by the unpackers.
Plyboo is like that. Attached image of of the Neapolitan. It is the heaviest and densest of the samples I received. I weighed and measured them all. The piece in the photo is 3/4" thick and I routed a 1/4 round corner on it. Careful!
Bamboo has a high silica content and dulls even SiC tooling fairly quickly. Watch out for burns.