As seen in the videos, these tools are a must have when you are smoothing over melted ends and lacing paracord through small spaces. Simply melt the ends of paracord with a lighter, then use this smoothing tool in a circular rocking motion. The end result is an extremely smooth surface.
Check out this video and fast forward to the 7:28 minute mark. You can see the fid tool in action. Fast forward to the 13:30minute mark. You can see the smoothing tool in action.