Who says you can't erase a mistake written with sumi or acrylic ink? Mentiras (lies), I tell you! So as I was working on my certificate for the Spencerian Masterclass taught by Michael Sull, I made a mistake. Yes, I am a mere mortal. If you go to your art supply store, they may tell you that it's not possible to erase sumi ink. It is possible...with caveats.
1. The nicer the paper, the better the result. Cotton papers from Canson, Fabriano, Crane, Arches....names like this are no problem. Metallic papers, thin papers...forget it. They are not up to the task.
2. Once you have made the mistake, skip the rest of that line and continue. You shouldn't do anything to it until it dries.
Now rewrite it! That's it! Bwa ha ha ha! They'll never know!!! We'll just keep this between us girls :).