I should have taken a before picture. The framers made the ceiling in the stairs too low, and their solution was to slice it up with a reciprocating saw 😳
It was a huge mess. Holes everywhere.
Trying to get it done for paint, so I did prefill, bond and a skim with 20, then threw on a skim of AP.
So many three ways such that it's a miracle it came out that nice while coating all inside corners at once. Still needs a final skim in the morning.
FYI, the angled piece looks like it narrows on one end, but that's just some leftover mud on the edge.
Ok Maybe it narrows a little. But it's mostly that mud on the corner 😂