Ok so here’s the situation… I replace skylights for a living, and often do the interior work myself, whether it be a small piece of trim or drywall repair/replace. In this situation I have N existing skylight with a drywall “well, or shaft”. That size doesn’t exist Anymore, so I need to frame the opening in let’s just call it 4” on either side, to fit a standard size skylight. Once I do this I am essentially left with a 5 1/2 (2x6) x 4” bump in on each side. To finish this off, without doing drywall, I would like to come out of the drywall groove in the skylight down 5 1/2” to where my frame-in ends and then instead of coming back at 90 degrees from that to tie back into the existing drywall, I would like to splay it. Meaning, come out at an obtuse angle from the 5 1/2” piece of trim so I can land somewhere further down the well towards the ceiling. What I can’t figure out is this… that will ultimately give me a pretty obtuse angle, let’s say just for the sake of this example it was 150 degree angle between the 51/2” piece down to the point I want to land on the drywall. How can I bevel that piece to make the angle between the two trim pieces and the angle between the bottom piece of trim and the drywall, because both I presume will be steeper than 45-50 degrees which is the max I can rip on my table saw without some kind of jig. Any thoughts?