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The Gentleman Stationer

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The Pilot Iro-Utsushi Dip Pen (and in General, Simple vs. Fancy Dip Pens)

October 1, 2025

This past weekend I did a post on ink swatching, and walked through how I create the ink swatches that I use both for the shop and to organize my own personal ink collection. Like most people with a lot of ink to organize, a key component of my ink swatching kit is a dip pen. Because I’m a writing enthusiast with an interest in the calligraphy and art sides of things as well, many of the pens that I personally use are on the more expensive side - particularly my glass pens and Drillog metal dip pen.

But what if I told you that an $8 alternative exists, and that in many ways this other pen is just as good and will serve you well for basic ink swatching and even some writing and journaling where you might want to switch up your inks mid-session and don’t want to fiddle with emptying or refilling fountain pens? That solution is the Pilot Iro-Utsushi Dip Pen.

I chose the fine since most of my other dip pens range from medium to double-broad.

The Pilot Iro-Utsushi is a very basic product: a standard dip pen with a stainless steel fountain pen nib (fine or medium) attached to it. This pen differs from a calligraphy dip pen in that the nib is tipped for writing, and it can’t be swapped out of the holder. While some might find this “limiting,” I think that’s the point and what makes this product special: it’s intended for one thing, which is writing with fountain pen ink.

Dip Pen Tools in Holder on Desk

While I’m not sure I’ll ever make the Iro-Utsushi a “core tool” in my repertoire - I have way too many fun glass pens to reach for - I see no reason not to have one, since it’s an excellent option to have within reach for travel, meetups, and quick writing samples.

As I mentioned above, you can use the Iro-Utsushi for both ink swatching and standard writing. In my last post, I mentioned how I like to keep small sheets of “micro swatches” that are more portable than full-size swatch cards. This dip pen would be perfect for that, especially in the fine nib. And it offers a nice experience for standard writing too. Despite the lack of a feed, the underside of the nib holds a fair bit of ink and I regularly get 3-4 full lines of writing with the fine nib version. While the holder is a bit narrow for my hand and therefore may not be especially comfortable for longer writing sessions of a page or more, that’s not something I’d typically do with a dip pen anyway.

Testing out some Nagasawa Kobe Ink #69 (Kikusui Biotope Green).

Takeaways and Where to Buy

I don’t have any problem saying that the Pilot Iro-Utsushi is one of the best basic dip pen options on the market to use with fountain pen inks. Whether you’re a glass pen enthusiast looking for a less-fragile option to take to meetups or away from the security of your desk, or just someone looking for an inexpensive option to finally finish swatching and categorizing all of your ink samples, it’s hard to do better than the Iro-Utsushi, especially at the price point.

And, yes, I know that some of you have probably heard the internet rumors from the Japanese market that the Iro-Utsushi is being discontinued, but other intel has suggested that Pilot is merely releasing new colors and the pen will continue to be offered, at least in the U.S. market. Pilot is a bit different than many Japanese pen companies in that they continue to offer certain products in the U.S. (i.e., the E95s fountain pen) even after they are discontinued in Japan. Stay tuned, but I’m not panicked on this one yet as I can still get them here.

You can pick up a Pilot Iro-Utsushi dip pen in our own shop, starting at $8, in a range of clear acrylic and wood finishes. Nibs come in fine or medium, but note that not every color available in both nib options.

The Gentleman Stationer is supported by purchases from the T.G.S. Curated Shop (an authorized retailer of Pilot pens) and pledges via the T.G.S. Patreon Program. Our brick-and-mortar store is open Thursdays and Fridays from 1pm-6pm, and on Saturdays from 10am-6pm. Please check our main store page for up-to-date hours and announcements regarding special events.

In Pens, Ink Reviews Tags Dip Pen, Ink Swatching, Pilot Iro-Utsushi Dip Pens
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New Arrivals: Introducing The Brass Wren Fineliner from Tom's Studio!

September 30, 2025

I’ve loved watching Tom’s Studio release the Lumos and Lumos Pro Duo Fineliners in a series of special finishes, and now it’s the Wren’s turn! Tom’s Studio announced The Brass Wren, and it arrived yesterday alongside a batch of the Pigment Black Ink and additional Wren colors, including “Iris” (dark purple). If you’re interested in trying out a refillable fineliner that is capable of using fountain pen ink, consider giving the Wren a try. Don’t be intimidated by the filling process - once you get the hang of it, it’s very straightforward. I even did a video demonstrating how to set up the Wren.

Also, just a head’s up that the TWSBI Carrara + Onyx ECO fountain pens have landed and are ready to ship. I unboxed mine last night! So far I’m enjoying mine, which I promptly filled with Laban Greek Mythology Aphrodite Pink (marble column theme and all).

We will be open this week for normal hours, including from 1-6pm Thursday and Friday, and from 10am-6pm on Saturday. You can always check the main store page for updated hours and announcements regarding special events.

In Pens, TGS Curated Shop Tags Tom's Studio Wren, Tom's Studio Fineliner, Tom's Studio, Refillable Fineliners

Multi Pen Versatility: Combining the Pilot 4+1 Multi Pen with the Uni Style Fit Gel Refill

August 20, 2025

When I had ordered these Pilot 4+1 Multi Pens, I knew that they used the exceptionally good Acro ink BVRF-9 low-viscosity refill. I was NOT aware that Uni’s Style Fit gel refill uses the same format, and therefore fits this pen. For today, I wanted to do a quick post showing off this feature because I love when multi pens are versatile enough to allow you to use both ballpoint and gel inks at the same time, and the contoured grip on this Pilot makes it not only versatile but extremely comfortable to use.

Here, you can see that I have taken one of the blue Pilot 4+1 pens and swapped in two .5mm Style Fit refills in Mandarin Orange and Blue-Black. The Acro Ink and Style Fit refills are exactly the same size and shape, allowing you to choose from among the 16 Style Fit gel colors in addition to the Acro Ink set.

The Acro-Ink Refill (left) alongside the Style Fit (right). Note that the Style Fit and Pilot BVRF-8 refills DO NOT fit Uni 4+1 Multi Pens, as these use a shorter Jetstream Refill. It’s also excellent but just a different format.

Both the Uni Style Fit and Acro Ink refills provide a smooth writing experience. Of course, the edge in smoothness and color saturation will go to the gel pen, but Pilot’s Acro Ink deserves a place among the best ballpoint refills on the market. We added one of these Pilot multi-pens to our most recent Patreon Curated Box, and received a ton of positive feedback on the stock refills so these will be a shop staple for as long as we can continue to get them. (They are imports.)

From top: Pilot Acro Ink in black, Uni Style fit in blue black, Pilot Acro Ink in red, and Uni Style fit in Mandarin Orange.

Takeaways and Where to Buy

Personally, I favor the Pilot 4+1 body over the Uni Style Fit Meister 5, though both are good. The contoured wood grip on this Pilot Multi Pen is among the most comfortable I’ve used, and I was thrilled to discover that there is a gel refill I can pair with it that offers .28mm, .38mm, and .5mm options in 16 different colors. (Just to be clear, the reverse is also true - the Style Fit body will take the Pilot refill.)

The Pilot 4+1 Multi Pen (Top) next to the Uni Style Fit Meister 5 (bottom). I prefer the Pilot’s grip, but the Uni does come in nearly a dozen different colors.

You can get the Pilot 4+1 and Uni Style Fit Multi Pens in our shop, along with the refills for both. As noted above, the Pilot 4+1 ships with four .5mm Pilot BVRF-8 refills (black, blue, red, and green, plus a .5mm mechanical pencil). The Uni Style Fit bodies are sold separately from the refills, so you can assemble your own customized pen.

Come see these pens in person! We are open this week from 1-6pm Thursday and Friday, and 10am-6pm on Saturday. Check out this page for up-to-date hours and news on special hours when we have to travel.

In Multi Pens, Pens Tags Multi Pens, Pilot Multi Pens, Uni Multi Pens, Uni Style Fit, Pen Review

Pen Review: Is the Uni Zento Gel Pen Worth the Hype?

August 16, 2025

One of the most-discussed releases of the past year has been the Uni Zento gel pen, which has captured the attention of the stationery communities in both Japan and the U.S. In particular, the “Zento Signature” - which features a cap as opposed to your typical retractable mechanism - prompted rushes reminiscent of the Uni Kuru Toga Dive mechanical pencil. While I’ve yet to get my hands on one of these “upscale” models for an extended test drive, I’ve had the opportunity to write with both the standard Zento and the slightly upgraded “Zento Flow” (both retractables) for a couple of weeks now. While I’m not sure I would pay more than standard retail for any version of this pen, the Zento is an excellent gel pen and so far I prefer it over the Uni One and any of the basic Uni Signo “office” inks.

The Uni Zento Flow Gel Pen in the Jade Colorway, in-hand. I also went with a Canary Yellow standard Zento.

So What’s the Story Behind the Zento?

Uni’s gel pen lineup can be confusing - the company has released multiple iterations of your standard black/blue/red gel pen and left them all on the market simultaneously, the only difference supposedly being different inks that to most people will seem quite similar. The Zento is advertised as formulated for “stress free” writing, which apparently refers to a combination of smoothness and cushion. The Zento is indeed quite comfortable to write with - the pen feels very smooth with little to no scratch, and the ink glides on the page and dries instantaneously. The ink is also advertised as formulated to reduce feathering and bleedthrough, and I can confirm there is none. Now was this actually so much of an issue with Uni’s other pens that it warranted an entirely new product line? I’m not sure, but it doesn’t change the fact that the Zento is good.

Ink Comparison: Zento Black Ink (top) has a more matte look, vs. the glossy black Uni One (bottom). To draw a comparison to fountain pen inks, I’d compare the Zento ink to something like Platinum Carbon Black or Sailor Kiwa-Guro, while the Uni One ink is more of a glossy black like Aurora.

How Does the Uni Zento Compare to the Uni One?

As I noted, in addition to the Zento, Uni released the Uni One a few years ago, which was supposed to be another “specialty” ink that’s a step above your standard office gel pen. I’ve found the Uni One and the Zento to offer somewhat different writing experiences, so I can confirm the distinction is real. The One contains an ink formulated to be extremely dark (standard black) and/or vivid (other colors), with a glossier finish. So if you prefer a darker, wet look to your gel ink, you might prefer the Uni One, especially if you’re using the pen for drawing or doing layout work in a bullet journal or planner. The Zento seems better suited to pure writing, as it lays down a remarkably smooth line and, in my opinion, has the more comfortable barrel.

Update: You can now view the Uni Zento companion video review on our YouTube Channel!

The array of barrel colors available for the Uni Zento standard. There are some great colors available.

Takeaways and Where to Buy

Uni makes a great gel pen, and I surprised myself with how much I enjoyed the Zento as I don’t typically do much writing with gel ink beyond quick notes and annotations. I strongly prefer the barrel on the Zento over the One and pretty much any other standard gel pen - it’s got a nice balance, the perfect diameter for my hand, and on the standard model, a soft texture that’s comfortable over longer sessions. I will also say that the clips on both the Uni Zento and the Uni One are excellent - the wire design is highly functional - with the slight edge to the Zento as it feels a bit tighter on both the standard model and the Flow. That said, if you prefer the barrel on the One but want to try Zento ink, the Zento refills fit the Uni One, and vice-versa.

We currently have a large selection of the standard Uni Zento gel pens available in our shop, as well as a smaller selection of the Zento Flow, with the upgraded barrels. Zentos are priced at $3 and $11, respectively, with extra refills available for $1.75. You can get a nice pen at a reasonable price, or pick up a refill that will fit one of your existing Uni pen bodies.

Come see these pens in person! Visit our shop, currently open Thursday and Friday 1-6pm, and Saturdays 10-6pm. Check this page to keep up to date on our current hours, which may change depending on travel schedules during pen show season.

You can tell the difference between the clip on a Zento (top and bottom) because it has the round holder, whereas the holder on the One is rectangular.

In Pens Tags Uni Zento, Gel Pens, Uni, Uni Zento Flow, Pen Review
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New Arrivals: TWSBI ECO "Serpentine Bronze" Pre-Orders Are Live; Pens to Ship This Week

June 24, 2025

TWSBI’s latest release is the second ECO in their mixed-color series, “Serpentine Bronze.” This new pen features a gorgeous mix of green and bronze/gold acrylic paired with TWSBI’s bronze-tone trim. Colors are mixed during the injection molding process, so no two pens will be the same and each will feature its own unique pattern of swirls. The Serpentine Bronze ECOs are priced at $51.99, and available for pre-order today. They should arrive this week and will begin shipping immediately. If you missed out on the first round of mixed-color ECOs, we have the “Amazonite” green and white version in stock as well. Be sure to check out our entire range of TWSBI Fountain Pens, Pencils, and Inks!

We are an authorized reseller of TWSBI products. Come see these and more in-shop, as the Serpentine Bronze ECOs should be in the store by the weekend! We will be open this week from 1pm-6pm Thursday and Friday, and 10am-6pm on Saturday. Be sure to check the shop page for up-to-date hours.

In Pens Tags TWSBI, TWSBI ECO, TWSBI Serpentine Bronze, New Arrivals
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