Wow, the "hello Geekhack" in the first picture almost looks like it was typed out! Fountain pens have such cool line variation.
Very neat handwriting, too!
I think as a kid, I tried to play with my dad's fountain pen, but it just ended up scratching the paper without any ink coming out/ then started leaking.
Never touched a fountain pen since.
Hahaha, I've got another which can flex up to about 3mm wide or so! I don't use it much though since it's an eyedropper-fill pen from around 1910, and it sometimes leaks a bit. I have some friends whose pens are just as flexible for so.
Before I seriously got into fountain pens, I also tried them as a kid - just ended up flicking the ink around like the kid I was LOL
Holy smokes Zeroblade... that super flex nib is super flexible
I collect fountain pens too... this is my favorite: )
Pelikan M640 Polar Lights edition with a 18ct white gold oblique bold nib.
The Polar Lights is really pretty! Though my favorite of Pelikan's Nature series is still the Niagra Falls.
Speaking of Pelikan, I've had the good fortune to be able to play around with the special edition M800 in Tortoiseshell, with a rare triple-broad (BBB) nib, ground to a cursive italic. A friend of mine wanted me to tune it up and smoothen the nib even more. So in the meantime, I'll be enjoying it 'til he gets it back! (I wish he never does)