Trim it with a spiral saw after it s in place.
How to hang sheetrock on walls.
Hang the abutting panel leaving it long and trim it to create a tight well fitted corner.
Do the same on the adjoining wall.
Fasten the bead with 1 inch drywall nails hammered every 10 inches through the perforations in each leg so that the legs are tight to the wall and the corner is not distorted in any way.
Protect the corners with metal corner bead.
A lift tilts from vertical to horizontal.
A lift makes it possible to hang rock solo but it s still nice to have a helper for loading the rock onto the lift.
Cut a piece of drywall long so that it hangs over the corner.
Run a drywall knife over the beading to ensure a tight fit and simultaneously remove excess compound.