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The Gentleman Stationer

Vintage Living in the Modern World.
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Pen Review: The Pentel Sign Pen (Craft Design Technology Version)

February 28, 2026

I have a soft spot for pens that have remained essentially unchanged for 60+ years, including the Lamy 2000, the Pilot Capless Series, and even less expensive pens like the one I plan to review here: the Pentel Sign Pen. Introduced in 1963, the Sign Pen is famous for its moderately flexible tip that allows for expressive line variation while remaining just firm enough to use for everyday writing. Long a favorite of calligraphers, I had written this one off as an “art marker” that wouldn’t be suitable for my more everyday needs. Let’s say I’ve had to reconsider.

An example of how I’ve been using these pens for my personal planner layouts.

Expanding My Japanese Fineliner Repertoire

Back in December we brought an assortment of Craft Design Technology products into the shop, which included CDT’s versions of a wide range of Japanese stationery items that I had never tried before. This shipment included not only the Sign Pens, but other unique finds including the Pentel Tradio, the Pilot Frixion 3 multi pen, and paper items such as the CDT Memo Rolls and Desk Note Bagasse notebooks. Of all the new additions, however, the Sign Pens and the Tradios were my favorites.

The brush/marker tip is adequately firm for writing, and the colors are quite vibrant. Writing sample here is shown on the CDT Desk Note (Large), which contains ink-friendly, sugarcane-derived Bagasse paper.

I’ve long been a proponent of fountain pen users trying out fineliners as an “everyday” alternative. Fineliners add a degree of expressiveness (meaning line variation) to your handwriting, and have a soft feel that, like a fountain pen, requires very little writing pressure. The Pentel Tradio is actually modeled after a fountain pen, but with a stiffer tip that will feel familiar to U.S. users accustomed to standard felt-tip pens and markers. The Pentel Sign Pen invokes a traditional Japanese brush pen, with a softer tip capable of more significant line variation. As a result, the Sign Pen has become a favorite for calligraphers and artists, though the tip remains firm enough that you can use it for standard handwriting and journaling.

The T.G.S. back-office work table.

So how do I use my own set of Pentel Sign Pens? I’m no calligrapher, and I long ago allowed my art skills to lapse, but I’ve thoroughly enjoyed these pens as journaling and planning tools. The tip is flexible enough to go from a relatively fine line to a bolder marker-esque line, making them useful for drawing layouts. I’ve also been trying to improve my cursive and reduce the amount of pressure that I use while writing by hand, so these are great given that the ink flows similarly to a fountain pen. Unlike many markers, the Sign Pens show relatively little bleedthrough and feathering on decent papers, with the ink behaving similarly to fountain pen ink in that regard.

The Pentel Sign Pen features color-coded end caps so that you can conveniently locate the pen you’re looking for.

Takeaways and Where to Buy

I keep a jar of the Craft Design Technology Pentel Sign Pens on the main worktable in the T.G.S. back office - that’s how much I’ve grown to love these things. I’ve always been a fan of fineliners and other fine-tipped markers, but the Sign Pen is different enough that I sometimes feel as though I’ve discovered an entirely different product category! I have one of the 10-pen sets, and I even kept the zippered pouch so that I can take these with me when I travel. They make an excellent addition to a journaling kit if you like to write in different colors but don’t feel comfortable bringing multiple fountain pens and inks.

If you opt for one of the multi-packs, be sure to save the pouch, as it’s quite nice for travel. (Or you can upgrade to one of the CDT Custom Leather zipper pouches.) :)

As noted above, we stock the Sign Pen in the exclusive Craft Design Technology mint green finish. For those unfamiliar with CDT, it’s a Japanese design house that collaborates with various stationery manufacturers on their own unique versions of classic items, including Pentel items such as the Tradio, Sign Pen, Energel, Sharp Kerry, and even more paper products and desk accessories. Most of their releases incorporate some version of their signature green colorway.

The Gentleman Stationer is supported by purchases from the T.G.S. Curated Shop and pledges via the T.G.S. Patreon Program. You can also come visit us at our physical stationery store in Nashville, Tennessee.

In Pens Tags Craft Design Technology, Pentel, Pentel Sign Pen, Fineliner Pens, Brush Pens
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Craft Design Technology collaborates extensively with Pentel, releasing their own versions of pens like the Pentel Energel, the Pentel Tradio, and the Pentel Sign Pen.

Weekly Drops: Got Gift Cards to Burn? New TWSBIs, a Roterfaden Restock, and More!

December 26, 2025

The week between Christmas and New Year’s marks that special time when everyone starts to (1) spend their holiday gift money/gift cards and (2) retailers look to clear out their excess inventory. To that end, everything in the T.G.S. Clearance section will now receive an automatic 25% off at checkout, no coupon code necessary. We’ve also received the latest TWSBI release “Obsidian,” as well as a large Roterfaden restock that has many different sizes in stock in addition to the standard A5! Finally, be sure to check out the latest arrivals from Japan, including special edition releases from Craft Design Technology and Graphilo!

CDT is a Tokyo and UK-based design house that collaborates with traditional manufacturers such as Pilot, Pentel, and more on their own versions of classic stationery items. These including multi-pens like the Zebra Sharbo and Pilot Frixion 3, a Pentel Sharp Kerry, Camel pencils, writing pads and notebooks, and even leather items. We are constantly adding more as they arrive, so stay tuned.

We will be open in our Nashville store normal hours (1-6pm Friday and 10am-6pm Saturday). Please come by and see us!

  1. TWSBI Obsidian Piston Filler. The latest TWSBI acrylic piston filler limited release has landed, and it’s a beautiful pearlescent black acrylic with rose gold trim. We still have a (very) small number of the TWSBI “Kai” release from last year, if you prefer the blue.

  2. Roterfaden Taschenbegleiter B5 Size. We’ve restocked on most Roterfaden sizes, but the increasingly popular B5 is the one we’re asked about the most. This will hold B5 notebooks as well as standard composition books.

  3. Roterfaden Taschenbegleiter A4 Size. We have a few larger-format A4 Taschenbegleiters in black. We get requests to bring in A4 but it’s definitely a larger portfolio so these restocks tend to be fewer in number.

  4. Roterfaden Taschenbegleiter TGS_25. Our store-exclusive A5-slim Roterfaden is still available in grey leather, with either the grey or green elastic. We have a growing selection of A5-Slim notebooks, including newly arrived Graphilo offerings! More on those below.

  5. Craft Design Technology Leather Pen/Pencil Cases. These zippered leather cases can hold either pens or pencils, and will age/patina beautifully. Available in either black or brown leather.

  6. Craft Design Technology x Pentel Mechanical Pencil. So far, this CDT special edition mechanical pencil that is based on the iconic Pentel Sharp Kerry is a top seller.

  7. Craft Design Technology Desk Note Bagasse Notebooks. These landscape-style notebooks feature CDT’s signature green color and fountain pen friendly Bagasse paper, which is made from sugarcane waste and handles most inks extremely well. The Desk Note is available in two sizes and designed to sit beneath a keyboard while you work.

  8. Craft Design Technology Notepads. Available in either A5 or A6, with a mint green or natural color, this textured paper is pleasant to write on and features a smaller grid for jotting notes or even drawing.

  9. Graphilo A5-Slim Notebooks. The A5 Slim format is becoming increasingly popular, and Graphilo has released these notebooks with lined, grid, blank or “Ciro” (white line) layouts. Each notebook contains 188 pages of fountain pen friendly Graphilo paper.

  10. Graphilo Notebooks and Looseleaf Paper. In addition to the A5 Slim format, Graphilo makes notebooks in traditional A5, Square, and A4 sizes, and even has looseleaf sheets available in both A4 and A5.

In TGS Curated Shop Tags Thursday Drops, Clearance, Year-End Clearance, TGS Curated Shop, Craft Design Technology, Graphilo, TWSBI

The Craft Design Technology multi pen, made for them by Zebra, features intricate patterns on the barrel.

Thursday Drops: Last Minute Gifts and Unique New Arrivals! Craft Design Technology, Graphilo, and Musgrave!

December 18, 2025

Well, it’s the week before Christmas, so if you’re relying on the internet to get you something shipped, mailed, and delivered in time, the best-case scenario is that you roll the dice and you luck out and it arrives on the 23rd or the 24th. There are simply no guarantees at this point. That said, we are here to help you in-person, and we have a ton of cool stuff that’s arrived in-store, including several recent Japan shipments containing Craft Design Technology, Graphilo, and more! If you’re short on ideas, you can check out our Holiday Gift Guide, and most of what we highlight there continues to be in stock.

These CDT Pentel Sign Pens, featuring a soft brush tip, have been heavily requested by in-store and online customers.

Craft Design Technology is a design house based in Japan and the U.K., best known for partnering with manufacturers on specialized custom versions of classic stationery items such as the Zebra Sharbo Multi Pen, Pentel Sign Pen, Pilot Frixion, and more. I have followed their work for years and am thrilled to be able to offer teir goods directly. As discussed in Tuesday’s post, we’ve also recently added Graphilo to our lineup of specialty Japanese papers, and people seem to be enjoying it because it’s flying out the door. Finally, we’re excited to restock on many of our Musgrave pencils, including the Heritage collection sets that offer a way to try out different Musgrave pencils and also have a cool pencil-themed case and pencil cup.

Our Nashville shop is open this week from 1-6pm on Thursday and Friday, and from 10am-6pm on Saturday. Check the shop page and on our Google profile for hours.

  1. Craft Design Technology x Zebra Multifunctional Pen. Years ago, the Zebra Sharbo was the trendy multi pen, known for its D1 gel refills that ran out in approximately 2 hours. Craft Design Technology has partnered with Zebra to release it’s own design in matte black and silver, substituting the gel refills for low-viscosity ballpoints and a .5mm mechanical pencil. For those who find other multi pens too long and clunky, this one is almost perfectly balanced.

  2. Craft Design Technology x Pilot Frixion 3 Multi Pen. Yes, the Pilot Frixion comes in a Dr. Grip-style 3-slot multi pen, complete with three different ink options and the Frixion eraser. Available in CDT’s dark green colorway. Refills available separately by individual color or a multi-pack.

  3. Craft Design Technology x Pentel Tradio Plastic Fountain Pen. A hybrid between a fountain pen and a fineliner, the Tradio adds a touch of softness to your writing to make it more expressive. Of all the CDT collaborations, the Tradio has been the one I’ve used the most, since the ink dries very quickly and makes an excellent planner pen. Tradio refills available separately.

  4. Craft Design Technology Brush Sign Pens. One of the most-requested items is now available! These soft-tip fineliners/markers/brush pens are sold individually in 10 different colors or come in two different assortment packs of 5 or 10 pens.

  5. Craft Design Technology Desk Note Notebooks. These landscape-style notebooks are made from bagasse paper, a byproduct of sugarcane processing. Bagasse paper is quite fountain pen friendly, and I’ve found that this particular notebook handles not just fountain pen inks but markers and other writing instruments as well.

  6. Kobeha Graphilo Paper. Developed specifically for use with fountain pens, Graphilo has developed a cult following over the years. Available in multiple formats, including A5, Square, and a 188-page A5-Slim (which will work with our Roterfaden TGS_25).

  7. Musgrave Heritage Pencil Assortment Pack. These popular pencil assortments have arrived just in time for Christmas, and yes you can reuse the pencil box as a pencil/pen stand or pencil case.

  8. Musgrave Highlighter Pencil Set. I can never stock too many highlighter pencils, and these 8-packs contain two of each color in a relatively rare slim barrel design.

  9. Musgrave Songwriter Pencils (Including Special Edition Blue Set). The 4B Songwriter pencil sold out nearly immediately when we had it in stock early in the year, and we’ve restocked on both the standard cream version as well as the new special edition Teal Blue set.

  10. Musgrave “Tennessee Red” Pencils. The Tennessee Red features the highly aromatic Eastern Red Cedar wood, which used to be a staple of pencil manufacturing until it was abandoned in favor of the more readily available Incense Cedar. A few years back, Musgrave sourced some slats to make the Tennessee Red, and it’s one of the more unique offerings.

The Craft Design Technology “Desk Note” in Large and Small Size.

In TGS Curated Shop Tags Thursday Drops, Craft Design Technology, Graphilo, Musgrave, TGS Curated Shop
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Visit the T.G.S. Curated SHOP
Updated "Best Pens" Guide
On the Paper Trail Podcast
TGS_25 Roterfaden New Stock Available
Hierarchies of Fountain Pen Friendly Paper

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