The toilet panels generally use an extruded aluminium edge cover. There probably is a plastic variant of that for sale, or you use a stick on laminate edge. for benchtops you get a sheet with a bullnose edge for the one side. I have one at work unused, too much work to cut it, though it is only a melamine laminated top, it does burn if you drop a soldering iron on it for a while. I used a sheet as a tabletop for years, it does not mind anything else, even survives direct sunlight for decades.