Tell us about yourself!
sure but if you're going to use anything other than waterbased paint (water color or kid's washable paint), you'll go through quills fast because I doubt it would be healthy for them to be soaked in paint thinner. Who knows though? Try it and write an 'ible.
This is just a guess but I think she's making a modern version of iron gall ink, so iron.
I skipped a lot of steps but I agree on the use of a nail file. I used a metal one, no flex in it. I made the mistake once of using a soft emery board and the tip turned out weird. I only score the inside, I don't cut through, seems to work great anyway.