This is to be used on any external corner where both a backing coat and skim coat will be applied. Angle Beads set the thickness for the whole wall so care to fix to wall should be taken to ensure you don't have to put too much plaster onto the wall.
Wherever the angle bead goes - so too does the plaster - so it must be straightened and levelled at the same time.
Allow 20 minutes per corner - some will be quicker - some longer!
Order of work:
Ensure the thickness is approximately correct before straightening and levelling.