It occurs to me that I could try out ink in a variety of nib sizes by getting several nib units for a Majohn/Moonman Wancai and just swapping the nibs without having to empty the pen. One half fill of the barrel of a clear Wancai would give a good look at how the ink behaves in various nibs without having to clean and refill an entire pen in each nib size. I currently have a set of Jinhao 51a in acrylic for daily use testing, but it takes ages to empty them, whether by using or by washing.
I don't actually like Wancais very much for daily use, because they're a bit fatter than I find comfortable to hold, but I may have had a slight shopping accident on AliExpress involving needing something to bring a basket over a minimum spend and there being a sale on a specific colour.






