In Defense of the Converter

Written By Kurashi no Bungu - くらしの文具

Whenever an expensive fountain pen employs a cartridge/converter (C/C) system, criticism tends to follow. The complaint usually runs along these lines:

"At that price, it’s a shame that it still uses a converter.”

It is an understandable sentiment. Pelikan employs a piston filler throughout its Souverän line. Aurora does the same with the Optima and 88. Kiyotaka Toma of Tohma makes a point of highlighting his Chilton filling system as central to the appeal of his work. Across high-end pens, a built-in filling system is generally read as evidence of extra effort: additional engineering, additional cost, another layer of consideration. Whether the absence of one is actually a failure is another matter.

A built-in filling system, whether piston, vacuum, lever, or eyedropper, is a mechanical assembly. Mechanical assemblies have moving parts. Moving parts require maintenance. Eventually, they fail.

When a Montblanc 149 begins to leak or refuses to draw ink, the pen becomes inoperable. The owner must either source the tools, parts, and expertise to fix it themselves, or send it to Montblanc for servicing. Montblanc's servicing fees are, to put it diplomatically, not modest.

2 of the three tools needed to fully disassemble a 146/149. A nib disassembly tool (left) and piston (right). A knockout block is needed to fully unseat the nib and feed from the housing.

A Pilot Custom Urushi using the CON-70 converter presents a different situation. When the converter wears out, a replacement costs a few hundred yen, ships from Amazon, and slots into place without ceremony. The same goes for a Sailor KOP, Platinum Izumo, or any high-end Japanese fountain pen aside from the Namiki No. 50, for that matter.

Left to right: Nakaya Ryogiri, Platinum Izumo, Pilot Custom Urushi, Sailor King Profit.

A piston-filling pen integrates the filling mechanism into the pen body. A C/C pen keeps them separate. The converter is not a permanent component; it is a replaceable part with a finite service life, and that is by design.

If a converter fails, you replace the converter. If a piston seal fails, you repair the pen.

Enthusiasts tend to read the former as evidence of cheapness and the latter as evidence of quality. In many other product categories, repairability is considered a virtue. We applaud laptops with replaceable batteries. We value cars whose common wear items can be swapped without dismantling the drivetrain. The appeal of a product that can be maintained by its owner, without specialized tools or factory intervention, is, apparently, only controversial in fountain pens.

I understand the complaint that, past a certain price point, a C/C system can feel like a corner cut. As though every element of the pen received careful thought except the one that moves. The assumption is that integration is always the more considered choice.

It might be the opposite. A maker who opts for a converter has decided, consciously, that the filling mechanism does not need to last forever. The pen does.

I made a version of this argument in my piece on ebonite feeds. The enthusiast's logic is consistent across hobbies: a component that demands more care is, somehow, a component worth preferring. Sometimes that perception is justified; a beautifully engineered filling mechanism possesses its own charm, and I have purchased pens for this very reason. Other times, I’m glad the pen comes with a C/C.

Pilot’s CON-70 converter. One of the best in the business.

None of this is an argument against piston fillers, vacuum fillers, or other integrated systems. What I’m trying to say is that a cartridge/converter system may lack romance, but it is hardly a sin.

I'm also trying to say that it is extremely painful to pay Montblanc to fix my pen.

—Montblanc 254, Montblanc Irish Green

Kurashi no Bungu - くらしの文具
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