Fountain Pens

Pilot Music Stub vs Signature vs Coarse Nib: Three Big Nibs, Three Very Different Writing Experiences

A hands-on comparison of three Pilot number 10 size nibs, covering tipping shape, line variation, ink flow, and who each one is actually for.

Three gold fountain pen nibs with different tipping shapes on a concrete surface

Introduction

Pilot offers one of the most interesting nib selections in the fountain pen world, and three number 10 size nibs in particular show just how wide that range is: the Music Stub nib, the Signature nib, and the Coarse nib. All three are big, juicy writers, but they behave very differently on the page. This comparison looks at tipping shape, line variation, ink flow, and overall writing experience to help you pick the right one.

Why Pilot’s Nib Range Stands Out

Not many manufacturers make specialty nibs both interesting and reasonably accessible. Montblanc has a wide nib range but availability can be inconsistent and prices are high. Aurora makes nice nibs, Pelikan used to, and Sailor offers a decent selection. Pilot stands out for combining variety with genuine market availability, and these three nibs are a good example of that breadth.

Three gold fountain pen nibs laid side by side on a neutral surface

Pilot Music Stub Nib

The Music Stub is a two-slit, three-tine nib in the traditional music nib style, unlike the Sailor music nib which uses only one slit and two tines. The tipping is genuinely stubby and slightly on the crisp side, which is exactly what gives this nib its character.

When properly aligned on the page, downstrokes come out crisp and cross strokes stay nice and thin, producing strong, satisfying line variation. The nib has some feedback, consistent and steady ink flow, and it shows off shading beautifully. The main caveat: because of the tipping shape, it can skip. If you write fast or rotate the pen too much, you can miss a corner of a letter. Light pressure increases shading but also increases the chance of the tines not hitting the page cleanly. It is a great nib for practicing calligraphy and doing flourishes, but not an obvious choice for everyday note-taking.

Close-up of a fountain pen nib touching paper with a shaded ink stroke

Pilot Signature Nib

The Signature nib shares the wide shoulder and small tine shape of the music nib but is quite a bit rounder, and as the name implies, it excels at signatures. It is far more forgiving than the Music Stub and simply glides across the page.

The trade-off is line variation: downstrokes have nice rounded ends, but the cross stroke looks essentially the same, so the contrast is minimal. Ink flow is a standout, ranking about as juicy as a nib gets without being a firehose, with no skips and no hard starts. You can write fast with it and it keeps up. Like these other Pilot nibs it is slightly yielding under pressure, but it is absolutely not a flex nib. For smooth, forgiving, fast writing with a touch of character, it is a delightful option.

Fountain pen writing a smooth wet signature across a notebook page

Pilot Coarse Nib

The Coarse nib is the whale of this lineup. It was chosen over Pilot’s Double Broad specifically because the Coarse is broader and rounder; the Double Broad is not as round. The large rounded tipping delivers a monoline at any angle: there is no line variation to speak of, just a big, consistent blob of ink no matter how you write.

It is smooth, round, and extraordinarily juicy, so much so that it can bleed on some pages and feather slightly on Tomoe River style paper. If you want a nib that lays down as little ink as possible, this is not it. Where it shines is inky play: smearing, spreading, and adding ink to lettering. Paired with an eyedropper-filled pen, it is genuinely fun to use, even if its original intended purpose is unclear.

Overall Buying Advice

Choosing between these three comes down to what you want the nib to do. The Music Stub rewards slow, deliberate writing with calligraphy and flourishes, and offers the best line variation. The Signature nib is the forgiving all-rounder, ideal if you want smooth, fast writing and wet, rounded strokes. The Coarse nib is a novelty in the best sense, a heavy-flow monoline for playing with ink and lettering.

Thick wet ink strokes and ink smears on a Tomoe River style notebook page

Conclusion

All three nibs show why Pilot’s specialty nib range is worth exploring. The Music Stub gives you crisp shading and character, the Signature gives you effortless smoothness, and the Coarse gives you glorious inky excess. Pick based on how you actually write, and each one can earn a permanent place in a rotation.

Further reading

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