Jay Pique wrote:

How about a CNC router?!

Still need either a reasonably powerful laser for the CNC or a
corner chisel.

I suppose you /could/ cut a good inside corner with a 1/64"
up-spiral bit in a couple of dozen passes; but I haven't seen any
of those bits with an adequate cutting length to clear the
chips/dust from a 1/2" deep cut.

Lasers that'll cut 1/2" plywood are a *bunch* more expensive than
corner chisels. (-:

--
Morris Dovey
DeSoto, Iowa USA