Thanks, folks!
Regarding the “unusual plywood,” it isn’t cheap, but I routinely buy “project ready” micro-lumber from
Ocooch Hardwoods in Wisconsin. I have a stack of ¼ inch thick boards in widths from 4 inches to 8 inches, and another stack of ⅜ inch thick boards. I think my current stock is poplar, ash, white oak (both rift-sawn and quartersawn), and walnut, plus some ⅛ inch bubinga and sapele for specialty use. I first made my own plywood in my
boring tools till before we moved to New Mexico, and that’s stood up great over the years. One time I did the math on what my special plywood costs per bf, but the answer just depressed me, and I never thought about it again.
But if you can reliably resaw lumber (which I also do quite a bit of, along with milling juniper into small boards), making your own plywood isn’t too bad expense-wise, and you can get some nice effects.