I often recommend the Platinum Carbon Desk Pen to artists, designers, illustrators — anyone who wants to draw with a fountain pen. First, it’s a relatively inexpensive fountain pen — usually under $20. Next, it ships with Platinum Carbon Black ink which is permanent and perfect for mixed media uses. Finally, the tip is very fine, comparable to the creative favorite, the Sakura Pigma Micron and other of its brethern (the fine fiber-tipped “technical” pens).
Recently, I’ve had trouble finding the classic EF Platinum Carbon Desk Pen through my favorite online retailers. I reached out to a couple contacts and received some conflicting information. On one hand, I was told that Platinum was no longer listing the Platinum Carbon Desk Pen. I looked on the Platinum web site for Japan and it appears that this is the case. The other info I received from the US distributor for Platinum suggested that the pen was still available from some online retailers but they did not clarify if the Carbon Desk Pen was being discontinued, rebranded or anything else.
I let the issue drop for a couple months (pandemic distraction and all) but when I started teaching, I really wanted my students to have access to this pen so my hunt started again.

In my renewed search, I found three variations: the EF, the M and the Desk Pen (no Carbon ink and a snap cap and clip). The EF and M (approx. $15) I got at Wonder Fair and the Desk Pen ($13.41) was purchased on Amazon. All three were sold in blister packs with one cartridge. Previously, I owned a 14K ($24) version from Amazon which I swapped the housing with a friend and cut it down to fit into a pencil case.

Above is a close-up of the nibs to show the difference in the housing and nib shapes. You can see there is a little bit of fiber stuck to the EF nib (something that can happen often because this nib is so fine). Amazingly, the 14K is even finer if you can believe it. Because it’s gold, there is a little give to it but its not flexible.
I have mentioned in the past that the Platinum Carbon Pen is not the prettiest pen in the world. The cap is hideous. The nib and its ability to handle permanent ink well and compete with the technical pens that end up in the trash when the tips wear down or the ink is used up make these worth their weight. And seriously, Sakura Pigma Microns are not going to win any beauty contests so I can look past their ugly. In fact, over time, I have learned to love their weird looks and their funny DEVO caps.
They are definitely function over form. But you can use Carbon Black cartridges or converters and they last so much longer than technical pens. The tips do not wear down and the variety between these styles provide the same range as several of the widths of technical pens.

On different paper, the Carbon ink will be more or less waterproof. I’ve done other waterproof ink tests but Platinum Carbon Black remains my favorite. Either way, it’s clearly water resistant. Depending on how much ink coverage you have, there might be a little transference but for fountain pen ink, it’s the most permanent I’ve found while still being easy to clean out of your pen.

So, while I’m having trouble finding the Platinum Carbon Desk Pen in the usual places, don’t give up. Until I know where Platinum has hidden these, do pen equivalent of crate digging and hunt down some of these gems. They are worth it. And if you know what has happened to them in the Platinum line up, please let me know.
Tools:
- Paper: Rhodia Uni-Blank No. 16 with 6mm guide sheet and Col-o-ring scrap paper.
- Pens: Platinum Carbon Desk Pen in EF and M ($15), Platinum Carbon Desk Pen with 14K nib ($24) and Platinum Desk Pen ($13.41)
- Ink: Platinum Carbon Black ($20 for 60ml bottle)
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Whatever the reason, I have one desk in my office currently designated for all things work, and one desk designated for all things ink. I typically use paintbrushes and glass pens for ink swabs. I consider the paintbrush the “gold standard” of swabbing an ink, but brushes require time and dedication to clean properly between each ink. The same is true of
Playing with ink is meant to be fun and relaxing, so I’m not saying speed and efficiency should be prioritized. But when you have minimal time to take breaks, you find creative ways to maximize that time. That “creativity” had me wondering if there were other options I had not previously considered.
Spoiler alert: Massive rabbit hole ahead.
It started rather simply. I found a
The first goal was to find a suitable replacement for my newly beloved foam swabs. I tested the plastic square tool from the cake decorating set and the tiny metal makeup spatulas.
I also tested the silicone brushes from the clay sculpting set and the tiny purple silicone spatulas.
Overall, all of the above tools get the ink onto the paper, but the end result varies a bit from tool to tool. Some show a little more shading than others or shading in a different part of the swab. The major difference between the paintbrush/foam swab and the rest of the tools comes when you are trying to make a straight line. Nothing really comes close to the clean lines of the swab or the brush.
However, if you’re going for a more abstract approach, the re-useable tools produce results that are much closer to the brush or swab.
The cake decorating and clay sculpting kits also came with tools with ball tips of various sizes.
It takes a little bit of practice, but these tools produce lines similar-ish to what you might get from speedball nibs of various sizes. The main difference is that you need to re-dip the tool into the ink every 1-2 letters. The upside is that means they are a breeze to clean.
The cake decorating set also came with some other wacky tools, and let’s just say I had some fun with these.
Unfortunately, many of the pointy tools that look similar to the tip of a glass pen are not very useable with ink. The ink just doesn’t get transferred to the tip of the tool with enough consistency to produce any kind of normal writing.
However, several of the tools here were particularly fun when you applied ink to the page first and then used the tool to spread the ink across the page. This was especially fun when multiple inks were applied to the page at one time.
Out of all the tools I used, there are a few that stand out as the tools most likely to get regular use in my ink rotation.
The silicone and metal spatulas are probably the most practical. They both suffer from the need to repeatedly re-dip into the ink, but they certainly get the job done. None of the tools replicate a paintbrush or the foam swab perfectly, but the
The two tools that surprised me the most and produced the craziest results were two additional cake decorating tools. I used a pipette to put two different inks on the page and used the tool to drag the inks across each other. The results produced some gorgeous colors. The blue curved plastic tool actually produces some really nice character and variation in the lines it creates.
I may not have found the perfect reusable solution yet to replace my foam swabs, but I definitely added several new unconventional tools to my ink desk.
I think I would call that a successful trip down a rabbit hole. Do you use any unconventional tools to test your inks?


































Tina Koyama is an urban sketcher in Seattle. Her blog is