| > I can't say erasure is a typical ability in fountain pen inks By volume, it is probably the majority of ink sold. Several countries require children to use fountain pens at school, or still have widespreaf use even if it's no longer officially required. Germany, the UK, I think India. The blue ink that everyone uses most of the time is erasable with a chemical eraser pen [1], which everyone in my class (in the UK) owned. Other colours were not erasable, so my gothic rebellion (requiring me to write in black or red) meant I had to be correct first time. [1] https://en.m.wikipedia.org/wiki/Ink_eraser § Chemical |
The thing with the erasers was once you erased, the chemical was still on the paper so you could not re-write ont he erased parts. This meant you had to use the other-end of the eraser pen where there was a special blue ink pen. Often this would then "bleed" heavily (perhaps I didn't wait for the paper to dry?) and never looked the same as the fountain pen ink, so it was hugely obvious where you made a mistake as your normal wiring all looked normal, then you'd get this huge blurry fuzzy blue mess where you "erased" a mistake :-)