To make the pins disappear go to a welding shop and get a 1/16 welding rod to match the material that the band is made from, aluminum for aluminum, brass for brass, etc.
Drill a hole in the band to match the diameter of your rod. I then use a taper pin reamer to create a little taper in the hole in the band. Peen the rod end down gently into the tapered hole. By gently I mean a death of a thousand taps! File and sand to match the surface contour of the band and finish polish. Repeat for other pins.
Note:The pin will peen better/easier if you file the end square before you start. You only need a pin diameter or less sticking above the band when you start.