=A0 =A0 =A0 =A0 =A0 =A0(H L Mencken)
The problem is no longer about cutting the hole, now it's about getting ductwork into the interior of the soffit.
The rafters come down at an angle (obviously) and the wood for the soffit goes up a slightly less angle. The space between the rafters and the "bottom" of the soffit on the inside is less than I need to get any kind of elbow in there. I need to look for some flat ductwork or have something made up.
I've got a good roofing contractor that I can talk to about it. I may even have him do it and be done with the project.