Lumink: The Definitive Pocket-to-Pro Titanium Fountain Pen

3.8in to 5.5in. Titanium. Precision.
The fountain pen that goes where you go. And stays as long as you do.

At just 1.6oz, it’s light enough to forget in your pocket — but substantial enough to feel right in your hand.

Every great tool starts with a sketch.

We drew this pen a hundred times before we cut it once. Every line questioned. Every curve reconsidered. Every millimeter measured against one question:

What does a pen actually need?

It needs to write. It needs to last. It needs to feel right in your hand.

Everything else is extra.

So we stripped away the extra. Left only what matters. And then we spent months refining what remained.

This is the result. This is Lumink.

Portable pens have been done. You’ve seen them — the ones that twist, that shrink, that promise convenience.

But convenience isn’t enough.

A pen should never make you choose between carry and comfort. It should never leak in your pocket. It should never dry out when you need it most. It should never feel like a compromise.

We set a different goal.

Not just a portable pen. A lifetime pen.

One that fits in your pocket but writes like a full-size. One that seals tight so ink stays fresh. One that’s machined from titanium — not because it looks nice, but because it lasts.

One that you could hand down.

This is Lumink’s goal: to make the last fountain pen you’ll ever buy.

Elegant enough for a boardroom. Tough enough for a backpack. Reliable enough for a lifetime.

And here’s exactly how we did it.

A beautiful pen that writes poorly is just a pretty stick.

Lumink uses German-made nibs — precision-ground and hand-tuned for optimal ink flow. Available in EF, F, and M, each nib is tested before it leaves the workshop.

The result? Smooth, consistent writing from the first stroke to the last. No skipping. No scratching. No hard starts.

Because the writing experience is the only experience that matters.

Steel Nib Sizes: EF, F, M

• EF — The Architect’s Edge
  Perfect for precise diagrams, compact journals, and thin paper.
• F — The Daily Commander
  Balanced and versatile for everyday professional writing.
• M — The Signature Master
  Rich ink flow and expressive strokes for bold signatures and creative writing.

A pen meant to last decades should never depend on proprietary supplies.

Lumink supports international standard cartridges, allowing you to refill it anywhere in the world.

Every pen arrives ready to write with a Schneider Black Ink Cartridge (Made in Germany) — known for smooth flow and deep, smudge-resistant color.

Want to switch your signature style? We offer three professional-grade ink options in our Add-on section:

• Deep Black: For authoritative, high-contrast documents.
• Royal Blue: For classic, vibrant correspondence.
• Blue-Black: The sophisticated choice for timeless journaling.

No proprietary traps. No supply anxiety. Just the freedom to write.

Most pens make you choose: portable or comfortable.

This one says no.

Closed, it’s 3.8in — shorter than a lipstick, smaller than a key. It disappears into your pocket, your bag, your jeans’ fifth pocket.

Open, it’s 5.5in — full-sized, perfectly balanced, exactly where a pen should be.

Two twists. Two seconds. No compromise.

Carry small. Write full-size. That’s it.

A fountain pen’s biggest enemy is air.

Air dries the ink. Air clogs the feed. Air turns a precision instrument into a useless stick in weeks.

Lumink fights back.

The cap seals against the body with precision-machined threads and an internal gasket — creating an airtight chamber that keeps ink fresh for months, not days.

Pick it up after a month in your drawer. After a season in your bag. After a year in a jacket you forgot you had.

Write. First time. Every time.

No shake. No scribble. No frustration. Just ink, exactly when you need it.

Most pen clips are an afterthought.

They pinch. They scratch. They loosen after a few months. Or they’re so tight you have to fight them every time you clip.

Lumink’s clip is different.

Inside, we added a precision ball bearing — a tiny detail that changes everything.

When you clip it to your pocket, the ball rolls smoothly over the fabric. No snagging. No scratching. No wrestling.

When you remove it, it glides out just as easily.

And because it’s machined from spring-grade titanium, it maintains tension for years. It won’t loosen. It won’t lose its grip.

A clip should hold. It should also let go. Finally, one does both.

Look closely.

Those aren’t curves. They’re facets — twelve precision-cut surfaces that catch light differently from every angle.

Turn it in your hand. The light shifts. The pen changes. One moment it’s subtle. The next, it catches your eye.

This isn’t decoration. It’s intention.

Every facet is machined to the same exact angle. Every edge is crisp, but never sharp. Every surface flows into the next with surgical precision.

Most pens are round because round is easy.

Lumink has twelve faces because easy isn’t the point.

A pen that lasts isn’t just about materials. It’s about every detail.

The titanium that won’t corrode. The threads that won’t strip. The clip that won’t loosen. The seal that won’t fail.

Lumink is built to work — and keep working — for as long as you write.

100 years? We think so. But let’s check back in 2125 and see.

Plastic scratches. Paint chips. Coatings peel.

Titanium remembers.

Every mark on this pen will be your mark. Every scratch will tell your story — a record of every pocket it rode in, every page it touched, every thought it captured.

The more you use it, the more it becomes yours.

Most pens you replace. This one you keep.

And years from now, when someone asks “How long have you had that?”, you won’t remember. Because it’s just always been there.

Open Lumink. Look inside.

What you won’t find: plastic threads that strip after a year. Glued joints that fail in heat. Cheap components designed to be replaced.

What you will find: metal. All of it.

Every thread is cut into titanium. Every joint is precision-fitted, not glued. Every component is machined, not molded.

This isn’t a pen assembled from off-the-shelf parts. It’s a pen built from scratch — because that’s the only way to build one that lasts.

We don’t expect you to drop your pen. But we tested it anyway.

We don’t expect you to carry it with keys. But we scratched it anyway.

We don’t expect you to keep it for 100 years. But we built it anyway.

Grade 5 titanium doesn’t bend. It doesn’t corrode. It doesn’t wear out.

Could Lumink last a century? The materials can. The mechanism can. The craftsmanship can.

The only question is: will you keep it that long?

A pen that’s perfectly balanced disappears in your hand.

You stop thinking about the pen. You just think about the words.

Lumink’s 140mm length isn’t random. It’s the result of testing — finding the point where the pen feels substantial but never heavy, present but never intrusive.

The weight is distributed evenly between your fingers. The grip section is contoured to match your hand. The cap, when posted, doesn’t throw off the balance.

Write for hours. Your hand won’t complain.

A crooked clip doesn’t stop a pen from writing. But it does stop it from being right.

So we made sure Lumink’s clip is straight. Not “kinda straight.” Not “straight enough.” Perfectly, precisely, permanently aligned with the centerline.

It’s a small thing. Until you notice it. And then you can’t unsee it.

With Lumink, you’ll never have to.

Hands are different. Grips are personal.

Lumink’s grip section is designed to work for all of them.

The diameter is 10mm — thick enough for control, thin enough for comfort. The taper is gradual, so your fingers find their natural position. The transition to the faceted body is smooth, so there’s no hard edge pressing into your hand.

And for left-handers: we thought of you.

The ink flow is tuned to reduce smudging. The grip is symmetrical, so there’s no “right way” to hold it.

A pen that fits everyone fits no one. So we made one that adapts.

See those threads? Each one is cut to the same depth, the same pitch, the same angle. They engage with a feel that’s hard to describe — a smooth, precise resistance that tells you: this fits.

See those facets? Every edge is crisp, but never sharp. Every transition is exact, but never harsh.

This is what happens when you make a pen on CNC machines instead of injection molds. When you measure in microns instead of millimeters. When you refuse to compromise on the details.

Most pens are made. Lumink is machined.

This is what happens when you make a pen like a tool — not a toy.

A pen is a personal thing.

The color you choose. The sleeve you use and the marks it collects over the years.

Lumink gives you choices.
What you do with them is up to you.

Three faces. One soul.

• Sandblasted Titanium — Raw, pure, untouched. The matte finish feels soft in your hand, while the natural titanium will slowly evolve with you, recording every moment in the subtle marks it collects.
• Anodized Gold — Warm, rich, distinctive. The anodization process creates a deep golden hue that catches light differently from every angle. A color that stands out without shouting.
• PVD Matte Black — Dark, stealth, purposeful. Physical Vapor Deposition creates a deep black coating that’s harder than the titanium itself. It absorbs light instead of reflecting it. Understated. Serious. Built to disappear.

Choose the one that feels like you.

Sometimes you want extra protection. Sometimes you want to carry it differently.

Lumink’s leather sleeves are made from full-grain leather that will age as beautifully as the pen itself. Available in two colors:

• Brown — Warm, classic, ages to a rich patina
• Black — Sleek, modern, understated

Each sleeve is hand-stitched and precision-fitted. Not too tight. Not too loose. Just right.

Because how you carry your pen says something too.

These are available to add to your pledge during survey that is sent out after the project has ended for an extra $12.

Compatible with included Standard International Cartridge for hassle-free daily use.

Every proportion of Lumink was carefully calculated and refined.
Barrel diameter, grip taper, cap length, weight distribution—each dimension was engineered to preserve a true professional writing experience while minimizing overall size.

Balancing portability and performance required extensive prototyping and testing.
The result: compact in your pocket, full-sized in your hand.