I've got a small curved garden wall that forms the boundary to a raised flower bed. The wall has been build with landscaping bricks with random relief. I want the wall to be smooth so I am in the process of rendering it.
My question is how do I achieve a true 90 degree arris/edge of the top and front edge of the wall? If the wall was straight I guess I would simply use a corner bead but since the wall is both convex and concave I'm not aware on any corner beading products that are designed to bend.