Sumi - The Flexible Fountain Pen - Waiting list
Thank you so much for supporting the first batch of Sumi Pens. If you missed out please join my waiting list here:
"Game-changing!" Sumi - The Flexible Fountain Pen
Why isn’t there a fountain pen that writes like a calligraphy pen with no need to dip it in ink? This is the question I asked myself three years ago. It seemed no one had a good answer so I set about answering it myself. And after a pile of prototypes, failed experiments and a lot of head scratching, I’m very proud to introduce you to Sumi - The Flexible Fountain Pen!
"Tom has done it again! I mean...just look at it! This is his new fountain pen that has a flexible fine nib which means you can have your thick and thin lines without having to dip your pen in ink every so often!"
Hazel's Lettering (professional calligrapher)
It's springy, fun to use and incredibly addictive!


Sumi - Flexible Fountain Pen, designed to celebrate creativity, craft and individuality.
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The brass stand has been designed to be equally happy standing on your desk, or in your bag on the go.
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The Sumi pen works beautifully with all Diamine Inks (including shimmer!) You can find them here). Be sure not to use calligraphy specific ink as this can clog the pen.
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Like a good pair of leather shoes the Sumi Pen will soften and become even more flexible with use. It will adapt to your style of writing and become unique to you.
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It is designed to compliment your calligraphy pen and not replace it entirely. If you're looking for the maximum softness and flex please take a look at my Flourish Pens.
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Measures 165mm with brass stand, 150mm without and weighs 67g with brass stand, 25g without.
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Each pen is beautifully presented in a gold foiled gift box.
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Every pen is machined from solid metals on a lathe used for making fine watch and aerospace grade components, so you can be sure your pen will write perfectly for years and years to come.
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Brass naturally develops a patina over time and with use. You can choose to embrace this unique change or use the polish provided to bring it back to it's gleaming best.
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Every Pen is dip dyed by hand so may have small speckles or colour variations; it's part of what makes your pen unique!