To make it simple I got hold of a couple "straws" from the "waterislife.com" folks in Edmond. I made a donation (which is a cool thing to do) and they let me buy straws for the family. They are good for about a year of daily use. Oh yea, about $10 bucks each!
I'm on massive blood thinners where if you look at me real hard I bleed! The hospital once used a rubber wrap somewhat like an ace bandage on steroids to stop an injury from bleeding out. That stuff was awesome but I can't find it anywhere.
If you're creating the blade out of CF that's as mentioned before a simple shank. If you are using CF as a handle then you might have something awesome.