Just in the process of getting a few blank blanking plates (standard UK 1 gang) ready for mounting on the wall. As these will be used for various cable outlets (i.e. cable straight through with no terminators), I'm just cutting a 20-30mm hole in the middle. Obviously the cut plastic will have a sharp edge and I'm just thinking about how/what I can put around the hole to protect the cables being routed through. Any ideas folks?