I made my first effort at friction fire a week ago, and failed. I had issues with the spindle popping out of the bow and flying several feet away, so I was having trouble with form and a few details like the bow being too tight, and probably too curved.
At any rate, I wrote about it, with pictures, on my new blog site, along with a review of a cheap multitool I was given at work, that I used for my firebow project.
https://puntyventures.com/2018/08/05/friction-fire-fail-with-seven-multitool/ A few pictures from the blog that you may enjoy...
TIIIIINDERRRRR!!

Screw this knife, I'm whipping out the axe.


If I could figure out how to post the article in it;s entirety, I would...but that's beyond my low tech skills, I guess.