If it's for rails, there is no point. A guy I work with replaced 3 edges underfoot, about 12 inches each and one fell out on his first run. We've done it for snowboarders and it's alright for them because they're more flat base on rails. You could get the edge replaced and then just use those skis to cruise on. Otherwise just round off the ends of the edge at the gap and coat the gap with epoxy.