Reflectors - to keep or not to keep?

[kfergos]

How getting about getting really creative and using ultra reflective 3M "Diamond Grade" to make some reflective spoke cards. It comes in 4 or 5 colors and can be easily cut - in fact you can get precut reflective stickers right here on this web site.

Where can you get the uncut 3M reflective tape? My experience with pre-cut reflective stickers is that they just don't stick very well on rounded surfaces (such as bike tubes) or of course fabric. Is the 3M diamond grade stuff stickier than the pre-cut stuff, too?