I wanted to make my own nib for some time, and I don't have the proper tools. So I invented a new type of nib! And also the feed!
I tried several designs, but I found that this one works well. I cut a sewing needle in three parts without the tip. Put them together in a triangular shape. Put all three of them into a screw dowel right for the size of my section. And put all of them into the section. To keep the "tines" properly pressed to each other, I used a part of another dowel. Then sanded the "nib" to a proper shape.
This one writes a little italic. And, you can grind all three sides of the nib to different sizes! You can have a pen with F, M, and B nibs for example.
It's my gift to all diy fans.