I have been a fountain pen user for several years and own a few different kinds. In a pen like my Sailor 1911 shown above, you can either use a *disposible ink cartridge or an ink converter which will allow you to use a bottled ink of your choice. (Such as J. Herbin inks.) Some pens like my Pelikan M200 use a piston to draw ink into the pen.
If you use a fountain pen, which of these filling mechanisms do you prefer? Lately I’ve been drawn to the pistons because they hold a ton of ink. I also like my vintage Parker Vacumatic which utilizes a diaphragm and a plunger to create a vacuum to draw ink into the pen. These also hold a good amount of ink before needing a refill.
*Disposable ink cartridges can be refilled by using a syringe type tool.