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Fisher

Space Pen Bullet

Typical for Fisher
FS
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A model in Fisher's fountain pen lineup. Specs below reflect the typical configuration across Fisher's core range.

A solid mid-range option once someone has decided fountain pens are a habit worth investing a bit more into.

Specs

Filling systemCartridge / converter (typical for most fountain pens)
Ink capacityVaries by model
Nib optionsF, M (steel, typical)
MaterialResin or metal
Typical priceVaries, check current listings
How long has your Space Pen Bullet been inked?
Inktend counts the days and reminds you when it's time to clean.
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About Fisher

Fisher is the American company behind the Space Pen, with roots in Paul C. Fisher's pen business and his Bullet pen design of 1948; it is now based in Boulder City, Nevada. Fisher developed a pressurized ballpoint cartridge with thixotropic ink, patented as the AG7 anti-gravity pen in 1965, which NASA adopted for Apollo missions after testing and which Soviet cosmonauts also used from 1969.

United States Founded 1948
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How to fill the Fisher Space Pen Bullet

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.

Keeping it clean

A quick flush with cool water every time you switch ink colors, plus a full clean every 4 to 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 Space Pen Bullet

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.

Bleu Azur
Callifolio
彼方 Bifang
Collection Traced
Colorvent 2024 - Blue Moon
Colorverse

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Frequently asked questions

How do I fill the Fisher Space Pen Bullet?
Snap in a pre-filled cartridge, or use a converter to draw ink from any bottle. The converter route is the cheaper long-term option.
What nib size should I get for the Space Pen Bullet?
Fine (F) is the safest default for a first pen. Go finer for small, dense handwriting; go broader if you want more ink character and shading.
How often does the Space Pen Bullet need cleaning?
Flush it each time you switch inks, and give it a full clean every 4 to 6 weeks of regular use.
Is the Fisher Space Pen Bullet good for beginners?
It can work as a first pen if you're comfortable spending a bit more to start.

Specs reflect the typical configuration across Fisher's core lineup rather than this exact model. Check current listings before buying.