I want to add a knee wall to an existing opening between my Dining room &
Kitchen.
How can i cut the Corner Bead on the existing opening from the height of
my kneewall ( 42" ) to the
floor ? I won't be able to see where the screws holding the corner bead
are.


*Cut the bead with a hacksaw. It may not be attached with screws.
Sometimes nails are used and sometimes they are just hammered on with a tool
that crimps them. Don't worry about being neat. You are going to have to
tape the new joints anyway.