I am coming up on a project with a desktop that is a trapezoid 32" wide at the front, and expands to 53" wide at the back over a depth of 26". This will be cut from a veneered top, so the cut will need to be a smooth cut of finish quality.
I have a full size tablesaw, but that would still constructing a substantial sled for a single cut.
My only thought is to clamp a straightedge along the board and use a router to make the cut? I would probably use a spiraled downcut bit as to make sure I do not damage the veneer top. I only have a 1/8" spiral downcut bit at the moment, but this will probably call for at least a 1/4" bit with enough depth to be able to cut through the 3/4" material.
Any other ideas or methods?