Inktend / Pen library / Arco
Pineider
Arco
A model in Pineider's fountain pen lineup. Specs below reflect the typical configuration across Pineider's core range.
This sits at the upper end of the hobby — a pen most people buy after they already know their nib and grip preferences, often as a long-term or milestone piece rather than a daily-carry first pen.
Specs
About Pineider
Pineider is a Florentine house founded in 1774, originally as a paper and stationery maker, that today also produces leather goods and writing instruments. Its fountain pen range runs from resin models such as the Avatar and Alba up to celluloid Arco pens, offered with steel or gold nibs. Prices span roughly EUR 140 for entry models to EUR 890 and above for the top collections.
How to fill the Pineider Arco
Fill it two ways: snap in a pre-filled international cartridge for convenience, or use a converter — a small plunger or twist mechanism that installs the same way a cartridge does — to draw ink from any bottle. The converter route opens up the entire world of bottled ink, which is where most of the hobby's color variety lives.
Choosing a nib size
Nib size determines line width, not writing pressure — fountain pens are meant to glide, never press. Extra-fine (EF) suits small, dense handwriting and thin paper; fine (F) is the most broadly recommended default; medium (M) shows more ink character and shading; broad (B) and stub grinds favor bold, expressive strokes and calligraphy-adjacent writing. The Arco's gold nib will also flex slightly with pressure, giving line variation that a steel nib of the same size won't produce.
Keeping it clean
A quick flush with cool water every time you switch ink colors — and a full clean every 4–6 weeks of regular use — is enough to keep the nib and feed performing well. Inktend's cleaning reminder is tuned to a 21-day baseline and adjusts naturally to how often you actually refill.
Pairing inks with the Arco
Because refills are quick with a cartridge or converter, this is a good pen for rotating through several colors rather than committing to one; sample vials work especially well here.
Frequently asked questions
More from Pineider
Specs reflect the typical configuration across Pineider's core lineup rather than this exact model — check current listings before buying.