Filling Systems
Cartridge, converter, piston, vacuum, eyedropper — capacity vs ceremony.
How a pen drinks shapes how you live with it. Cartridges travel; converters unlock bottles; pistons carry a week of writing; vacuums fill with a thunk; eyedroppers turn the whole barrel into a tank. We map each mechanism’s capacity, mess factor, and maintenance honestly — including the ones we’d skip.
Common questions
Reader favorites
The short list — see the full ranking on the best-pens desk.
Kaweco pen pouch
$26.96
Check priceFaber-Castell Loom fountain pen
$81.59
Check priceOpus 88 Koloro fountain pen
$139.50
Check price
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63 guides on the desk
42 pens & inks vetted
2,304 reader price checks
The specimen press
Original nib & ink art, made to order.
