My budget squeezed out the use of normal corner trim (aluminum type that takes a 1" wide plastic bead insert trim).
I found this discarded plastic material at work that, in cross-section, looks/functions like the regular aluminum stuff. It is made of black polypropylene. Only problem is that the groove (where the screw heads need covering) is only about 3/4" wide. All the plastic insert bead I've seen online is 1" wide.
I've never layed hands on this bead, so I'm not familiar with it. To those that have used it, do you know if it could be trimmed along the edges to slightly narrow it? Or do you know if anyone makes a 3/4" wide bead? Thanks.