I'm working on converting a stone barn into a house. Some of the stone walls I'm leaving exposes, some I'm covering to insulate better.
In some locations, I have a 90° interior corner where drywall will meet uneven stonework.
How does someone normally finish such a corner? (the drywall will attach to the wood studs pictured)
Given that drywall mud and/or paint on the stone will look ugly, scribing a piece of wooden trim is one approach (set the trim plumb, set dividers to the widest gap, drag the dividers along to make a mark for where to cut the trim to fit the wall profile.)
You can also scribe the edge of the drywall itself, and then caulk it neatly at the joint. Neatly is the trick. You can add wood trim as above on top of the drywall if not-neatly doesn't extend more than the thickness of the wood.
You can use a tear-away bead to provide a clean finish to the drywall edge. It’s quick to install and also protects the stone/brick from getting mud and paint on it. Afterward, you can decide if you like the finished look; if not, you can scribe a piece of trim or caulk the gap.
Here's a YouTube video on installing it: Vancouver Carpenter
I am extremely lazy, and the other suggestions sound like a lot of work.
I would put the drywall close to the wall, leave a 1/8" - 1/4" gap. Then carefully fill the gap with caulk of your choice. Preferably paintable. Wipe away any excess.
If you like how that looks.. Then call it a day. It is quick, easy, and cheap. It also looks nice (in my opinion).
There's a special gauge, looking somewhat like a many-toothed comb, which can be offered to the wall, and its profile transferred to the board. Then it's just a matter of drawing round that profile, and cutting it with a craft knife, or jigsaw. Again, there's a special tool, with magnets, which will cut both sides around weird shapes, for a neat finish. Then caulk it if you like.
The poor man's way would be to painstakingly cut the profile from a piece of card, and use that as the template.
