unsharpen.com

Unsharpen measures writing distance by pairing SVG test patterns with an Axidraw pen plotter — a drawing robot — so a pen can be run continuously under controlled, repeatable conditions until it stops writing. The method is documented on unsharpen.com under the post "Measuring How Far Pens Write: Writing Distance Test Pattern" (10/22/24), and it exists because claimed refill distances are large enough that human testing is impractical.

The core problem the test solves

Refill makers publish distance claims that are hard to verify by hand. Unsharpen cites the Fisher Space Pen PR4 refill as claiming up to 6,000 meters. Writing that much by hand would take an unreasonable amount of time and would introduce variation in pressure, speed, and paper contact. A plotter removes the human variable: it draws the same pattern at the same speed on the same paper, so the only thing changing between runs is the pen itself.

How the test works

Inputs

• An SVG file containing the test pattern to be drawn.
• An Axidraw pen plotter, which holds the pen and executes the SVG as physical strokes.
• The pen being tested, mounted in the plotter.

Action

The plotter draws the SVG pattern repeatedly. Because the pattern is a defined file, each pass is identical in length and geometry, which means the total distance written is a known quantity that accumulates pass after pass.

Expected result

The pen keeps drawing until it runs out of ink or otherwise fails to mark the paper. The accumulated distance at that point is the measured writing distance for that pen.

Why the tests take so long

The bottleneck is the distance claims themselves. If a refill is rated near 6,000 meters, the plotter has to draw for a very long time to reach that figure — the article notes that even with a robot, the testing "can take a huge amount of time." This is a constraint of the subject matter, not the equipment: the robot removes human effort, but it cannot remove the raw distance a long-life refill is designed to cover.

What this means if you want to use the results

• Comparisons are only fair within the same setup. Because the SVG pattern, plotter, and paper are fixed, differences in distance between pens reflect the pens, not the test conditions.
• A single number is a stopping point, not a rating. The test measures how far a pen writes before it stops marking — it does not by itself tell you about line consistency, skipping, or how the last stretch of writing feels.
• Long-life refills are the slow cases. Expect results for high-capacity refills to arrive later than results for pens that run dry quickly.

Unsharpen publishes these tests under its Pen Distance Testing category, alongside other data-driven pen and pencil articles such as "Which Pens Are Sold In The Most Sizes?" and "How Long Is A Pencil?"

Unsharpen is a review site focused on pens, paper, and pencils. It publishes reviews, buying guides, test data, and articles about writing instruments and stationery. If you are trying to choose a pen, compare gel pen options, or understand how writing tools perform over time, Unsharpen is built around that kind of practical evaluation rather than general lifestyle coverage.

What Unsharpen Covers

The site's stated focus is "The Best Pen, Paper, and Pencil Reviews," with content organized around reviews, guides, data, and articles. Its published headings show the range of topics it treats as core coverage:

• Pen testing and performance data — for example, "Measuring How Far Pens Write: Writing Distance Test Pattern"
• Product comparisons — for example, "Which Pens Are Sold In The Most Sizes?"
• Category buying guides — for example, "The Best Gel Pens of 2024"
• Manufacturing and origin questions — for example, "Where Is The Sharpie S-Gel Pen Made?"
• Basic specification explainers — for example, "How Long Is A Pencil?"

That mix suggests the site is aimed at readers who want both recommendations and the underlying measurements or facts behind them.

How It Tests Pens

One notable example of Unsharpen's approach is its writing-distance testing. According to the site, it runs tests to find out how far a pen can write, using SVG test patterns paired with an Axidraw pen plotter — described as a drawing robot — to test writing distance in a controlled way.

The site notes that this testing can take a very long time, because pen refills can claim very long write-out distances. As one example it cites, refills like the Fisher Space Pen PR4 are claimed to last up to 6,000 meters. Even with a robot doing the writing, measuring that kind of distance is a slow process.

This matters if you are comparing refills or pens on endurance: the site is trying to produce measured distance data rather than repeat manufacturer claims alone.

Who It Is For

Unsharpen is useful if you:

• Want reviews of specific pens, papers, or mechanical pencils before buying
• Are comparing options within a category, such as gel pens
• Care about measurable performance, like how far a refill actually writes
• Want answers to narrow factual questions, such as where a particular pen is made or how long a pencil is

It is less suited to readers looking for general office-supply news or broad stationery lifestyle content, since its headings and description point to instrument-focused reviews, guides, and data.

How to Use the Site

Start with the category you are shopping in — for example, a "best gel pens" guide — then look for the supporting test or data article if you want the reasoning behind a recommendation. For refill or longevity questions, the writing-distance testing articles are the relevant section. For quick factual questions about a specific product, the individual explainer posts (such as where a pen is made) are the fastest entry point.

One caveat: the site's own description references "2021's best" reviews and guides, while some published articles carry 2024 dates, so check the date on any buying guide before treating it as current.

Unsharpen has a page specifically asking this question, but the excerpt available here doesn't state a country of origin. So the honest answer is: this source raises the question without giving a verifiable answer in the material provided. If you need the manufacturing location for a specific reason — import labeling, a school project, or curiosity about the supply chain — the reliable path is to check the product itself or the manufacturer, not a review site.

Why the question is harder than it looks

"Made in" on a pen is not always one place. A few things can be true at once:

• Assembly location — where the pen is put together and filled.
• Component origin — where the barrel, tip, ink, and spring come from.
• Labeling rules — what a country requires to be printed on the product or packaging.

A pen can be assembled in one country from parts made in several others, and the label may reflect only the final substantial transformation. That's why two people can buy the "same" pen and see different origin markings on the package.

How to find the answer yourself

1. Check the pen or its packaging. Look on the barrel, the clip, the cap, and the back or bottom of the card or box. Origin markings are often small and printed near the barcode or in the fine print.
2. Check the refill. If the pen takes a replaceable refill, the refill packaging sometimes carries its own origin marking, which may differ from the pen body.
3. Check the manufacturer's listing. Newell Brands (Sharpie's parent) product pages and spec sheets sometimes list country of origin; retailer listings sometimes do too, though they are less reliable.
4. Compare across batches. If you have several S-Gel pens, compare markings. A change in marking between purchases tells you the source may have shifted.

Expected result: you either find an explicit "Made in ___" marking, or you find nothing — in which case treat any single-country claim you read online as unverified.

Common sticking points

• Retailer listings are inconsistent. Third-party sellers often copy origin data from other products or leave it blank.
• Review sites usually don't test this. Unsharpen's focus is pen performance, distance testing, and comparisons — not supply-chain documentation. Its page on this topic exists, but the excerpt here doesn't supply the country.
• "Designed in" is not "made in." Marketing language often separates the two, and they can point to different countries.
• Origin can change over time. A pen that was made in one country a few years ago may not be made there now, so date your source.

What Unsharpen does cover well

If your interest in the S-Gel is really about how it performs, Unsharpen's relevant material is elsewhere: gel pen comparisons (including a best gel pens roundup), pen size availability, and its ongoing writing-distance testing, which uses SVG test patterns and an AxiDraw pen plotter to measure how far a pen writes. That testing is slow by nature — some refills claim up to 6,000 meters, as with the Fisher Space Pen PR4 — which is why the project runs over long periods.

Bottom line

For the manufacturing location of the Sharpie S-Gel, go to the physical product or the manufacturer's own documentation. Unsharpen's page on the question is a useful signal that people ask it, but the excerpt provided doesn't answer it, and no country should be stated here without a checkable source.

Unsharpen has published a dedicated analysis titled "Which Pens Are Sold In The Most Sizes?" as part of its review and data coverage. The site's stated focus is pen, paper, and pencil reviews, guides, data, and articles, and this particular piece sits in that data-driven category: it examines how many size variants different pen models are offered in. If you want the actual ranking of pens by number of available sizes, that article on Unsharpen is the source to read, since the specific list is the subject of the piece itself rather than something summarized in the site's general description.

What the article covers

Based on the title and the site's editorial pattern, the analysis looks at size options across pen models — that is, how many distinct configurations (such as different body sizes, tip sizes, or variant dimensions, depending on how the pens are sold) each model is available in. The goal is to identify which pens give buyers the widest range of size choices.

This is a "data" article rather than a single-product review, which fits how Unsharpen describes its own output: reviews, guides, data, and articles.

Why size variety matters when choosing a pen

The number of sizes a pen is sold in is a practical signal for buyers:

• Fit matters more than brand loyalty. A pen that comes in several sizes is more likely to match your hand size, grip preference, or writing style.
• Replacement and refill continuity. A model sold in many sizes tends to be a long-running, widely distributed line, which usually means refills and variants stay available.
• Comparison shopping. If two pens write similarly, the one with more size options gives you more ways to fine-tune the choice.

How to use the Unsharpen analysis

1. Go to unsharpen.com and open the article "Which Pens Are Sold In The Most Sizes?"
2. Read the ranked list to see which models appear with the greatest number of size variants.
3. Cross-check against your own needs — for example, if you want a specific tip size or a particular body diameter, confirm that variant exists for the model you're considering.
4. Use the site's related reviews and guides to check writing performance, since size variety alone doesn't tell you how a pen writes.

Related Unsharpen coverage

Unsharpen's page evidence also shows other data-oriented and review content, including:

• "Measuring How Far Pens Write: Writing Distance Test Pattern" — a pen distance testing project using SVG test patterns and an Axidraw pen plotter, noting that some refills (such as the Fisher Space Pen PR4) claim up to 6000 meters of writing.
• "The Best Gel Pens of 2024"
• "Where Is The Sharpie S-Gel Pen Made?"
• "How Long Is A Pencil?"

These sit alongside the size-comparison article and reflect the site's mix of testing data and buying guidance.

Bottom line

If your question is specifically which pens come in the most sizes, the answer lives in Unsharpen's article of that exact title — read it directly for the ranked list. Use the size count as one input among several, and pair it with the site's writing-distance testing and gel pen reviews when you're deciding what to buy.

Unsharpen's 2024 gel pen coverage is organized around a single page, "The Best Gel Pens of 2024," which sits alongside the site's other data-driven pen and pencil guides. If you want Unsharpen's 2024 picks, that page is the entry point; the site's broader method is to pair hands-on use with measurable testing rather than pure opinion.

What Unsharpen Is

Unsharpen describes itself as a source for "pen, paper, and mechanical pencil reviews, guides, data, and articles," and its 2024 output leans heavily on that "data" claim. The site runs its own testing rather than only summarizing spec sheets, and it publishes the results as standalone articles.

Two examples of that approach appear in its current lineup:

• Writing distance testing — Unsharpen is running tests to determine how far a pen can actually write, using SVG test patterns driven by an Axidraw pen plotter (a drawing robot). The stated reason for automating it: refills such as the Fisher Space Pen PR4 are claimed to last up to 6,000 meters, so a full test takes an enormous amount of time even with a robot.
• Size availability analysis — a separate piece asks which pens are sold in the most sizes, which is a supply/variety question rather than a writing-performance one.

That mix matters when you read the gel pen guide: the site's recommendations are meant to sit on top of measurable behavior (how long ink lasts, what's actually available), not just writing feel.

How to Use the 2024 Gel Pen Page

1. Go to unsharpen.com and open "The Best Gel Pens of 2024."
2. Treat the picks as category recommendations, not a single universal winner — gel pens differ mainly in ink flow, dry time, smudge resistance, and refill availability.
3. Cross-check any pen you're considering against the site's other tests where relevant. For example, if longevity matters to you, the writing-distance project is the closest thing to an independent measure of how far a given refill goes.
4. If you care about a specific model's origin or dimensions, Unsharpen also publishes narrower pieces such as "Where Is The Sharpie S-Gel Pen Made?" and "How Long Is A Pencil?" — useful when a buying decision hinges on manufacturing location or physical size rather than performance.

What the Page Evidence Does and Doesn't Tell You

The available site data confirms the existence and framing of the 2024 gel pen guide and the testing projects behind the site's reputation. It does not include the individual pen names, rankings, or scores from that guide, and there are no pricing signals in the source material — so nothing here should be read as a price or availability claim.

Practical takeaway: use Unsharpen's 2024 gel pen page as a shortlist source backed by a site that tests ink endurance and product variety, then verify current pricing and stock at your retailer, since those change independently of any review.