Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition
Sumi - Flex Fountain Pen, Black Edition

Sumi - Flex Fountain Pen, Black Edition

Regular price £115.00
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"Game-changing!" Sumi - The Flexible Fountain Pen

(Sumi pens are made to order so please allow 1-2 weeks before dispatch)

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)

The Sumi's secret ingredient is the custom, super-flexible nib which allows you to write as thin as 0.4mm, and up to 2.0mm when fully flexed. It’s also tipped with a German iridium tip for a smooth writing experience (no more scratching or ink splatters) and, unlike standard calligraphy nibs, it will last a lifetime.


It's springy, fun to use and incredibly addictive!

The Sumi pen comes with an ink converter (a fancy re-fillable ink cartridge) which means you can use the pen with 100s of different coloured fountain pen inks. I highly recommend using Diamine Inks as they’re lovely and juicy and even have a metallic colour range which shimmers in the light! 
Just as the function of the pen honours calligraphic heritage, the form is also inspired by a traditional quill and ink set. I’ve paired the design back and have also infused the aesthetics with a minimalist Japanese look (hence the name Sumi which means ‘ink’).  The making of the pen is a different story, and is firmly rooted in the 21st century. By using state of the art CNC watchmaker’s lathes I can create a supremely refined and well balanced pen.
shimmer ink in a fountain pen
A big question (which, as a designer I often grapple with) is this: ‘We are all individuals so why are the products we use on a daily basis so often utilitarian and say so little about us and our own individuality?” It’s the reason I wanted to create a pen which is as unique as its owner. So I spent a lot of time developing a new dyeing process taken from fine jewellery production techniques.  Every pen is individually dip-dyed by hand using this technique, making each one subtly unique.

Sumi - Flexible Fountain Pen, designed to celebrate creativity, craft and individuality. 

Good to know & FAQs:
  • The brass stand has been designed to be equally happy standing on your desk, or in your bag on the go.

  • 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.

  • BONUS, Want to use your Sumi as a creator pen?  No problem, you can find the attachment here.

  • 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.

  • 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.

  • Measures 165mm with brass stand, 150mm without and weighs 67g with brass stand, 25g without.

  • Each pen is beautifully presented in a gold foiled gift box.

  • 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.

  • 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.

  • Every Pen is dip dyed by hand so may have small speckles or colour variations; it's part of what makes your pen unique!

  • We Ship Internationally.
  • Your order will be shipped within 48 hours when in stock, please refer to lead times of the product you are buying, as some handmade / hand dipped products may take longer until we send them.
  • All UK orders are shipped free over £60 using Royal Mail and there is a tracked or special delivery option so you can track them as they leave us. For International orders we use the Royal Mail’s Airmail service. Again, you can track them along the way.

Why Tom's Studio

Values & Craftsmanship

Tom still uses the same design principles as the very first pen he made for his wife. It's important to him to create products that his customers will cherish for the rest of their lives. It's why each every one of my products has a lifetime guarantee.

 "Have nothing in your house that you do not know to be useful, or believe to be beautiful." William Morris

Creativity Tools

Tools of the past were made by master craftspeople that cared passionately about their craft and the experience of the people using their products. We seem to have lost the 'soul' of these tools in the age of mass production. It's my mission to bring the creative soul back to the tools we use every day.

"Creativity is contagious, pass it on" Albert Einstein

Tried and Tested

Seeing his calligrapher wife, Gemma Milly, using a mass-produced calligraphy pen inspired Tom to craft a collection of pens that matched the high quality of her work. Using a 60-year-old engineering lathe, he now makes pens for some of the world’s most celebrated calligraphers and stationery brands.

"Beauty Is The Harmony Of Purpose And Form." Alvar Aalto

A Labour Of Love

From the first pen I made for my wife to the pens I now make for my customers around the world.  I put the same care and attention into each and every pen.  I love what I do and hope that it shows in the finished product.

old fashioned lathe