seam ripper to open the binding seam. zigzag a few times over the torn area to give it strength. insert into binding tape and seam it back together.
Or as per above... dry cleaners and $5.
edit: oooh just saw the melted edge comment... that (just be VERY careful not to melt back too far!) or the repair tape on the inside... before sewing back together. the frayed part is going to be 1/8" shorter, but dont worry, you'll never notice the 1/8 inch once its all back together.
Last edited by nycphotography; 11-07-20 at 09:33 PM.