I have often seen Sandy1's ink reviews where the width of the pen and different papers make an ink look completely different.
It was a real shock to me, the first time I actually 'saw' it instead of just hearing about it.
Writing is 1/3 width&flex of the nib, 1/3 paper and 1/3 ink and in that order.
So the next thing to do, is to start buying good to better papers. They cost two cans of machine bought Coke or two cups of Starbuck's coffee more than normal copy paper.
There is no perfect nib, no perfect paper, no perfect ink; there is however perfection that can be had with luck, were a nib, a paper and an ink all match. Our grail....
....and do keep a copy....do write that down in your log. I have reached perfection once.....somewhere in my file I have that sheet, Organization is half the war.....what should be engraved in my mind, is lost in a file.
German vintage '50-70 semi-flex stubs and those in oblique give the real thing in On Demand line variation. Modern Oblique is a waste of money for a shadow of line variation. Being too lazy to Hunt for affordable vintage oblique pens, lets you 'hunt' for line variation instead of having it.
www.nibs.com/blog/nibster-writes/nibs-germany & https://www.peter-bo...cts/nib-systems,
The cheapest lessons are from those who learned expensive lessons. Ignorance is best for learning expensive lessons.