toolish,I have seen keychain bottle openers like you descibe.I did this one as a quickie graduation gift....and the working end is what I dislike about that one.It looks machined rather than forged.....well,because it is. :D
dcraven,I think all of yours look much nicer than mine....much more fluid and better designs.For the grooves I just used a cutoff wheel in an angle grinder.Some type of fuller would probably be much faster,but I don't have one.Thanks for the comments and photos.
Thanks Frosty,....yep they work.I have been experimenting with the twists and have knocked some divots into the corners.....but they stretch considerably when twisted.I am practicing for a larger project. :)