How to Clean a Fountain Pen: A Step-by-Step Guide
A fountain pen will forgive a great deal: a fortnight of neglect, a slightly heavy hand, a pad of cheap paper. What it will not forgive is ink left to dry in the feed. Most of the faults people blame on their pen — skipping, hard starts, a scratchy nib, ink that turns watery halfway through a converter — are clogs that twenty minutes with a glass of water would have prevented. Cleaning is not a job to save up for a rainy Sunday. It is part of using the thing.
Why clean, and how often
Fountain pen ink is mostly water, with dye or pigment, a surfactant to help it flow and a biocide to stop anything growing in the bottle. When the water evaporates inside a nib and feed, the rest stays behind. That residue narrows the ink channels, changes the flow and eventually stops the pen altogether. Pigment inks leave solid particles, iron gall inks leave a deposit, and shimmer inks leave tiny flakes that settle happily in a feed.
How often depends on the pen and the ink. If you write daily with the same ink, a flush every four to six weeks is plenty. Always clean before changing ink, before putting a pen away, and straight after a fill of pigment, iron gall or shimmer ink. If a pen has sat unused for months, assume it needs work.
What you'll need
- Cool to lukewarm water. Never hot.
- A small bowl, or a sink with the plug in, so dropped parts don't vanish down the drain.
- Kitchen paper or a soft, lint-free cloth.
- A rubber bulb syringe — a couple of pounds from any pharmacy — which flushes a nib section far faster than a converter.
- Proprietary pen flush for stubborn cases, used to its own instructions.
- An ultrasonic cleaner if you use shimmer inks often.
Skip the alcohol, the bleach and the generous squirt of washing-up liquid. Alcohol clouds some plastics and ruins hard rubber; bleach attacks metal trim.
The quick flush between fills
If you are refilling with the same ink, you can usually just refill. If you are switching colours, do this rather than a full clean. Remove the converter or cartridge, hold the nib section under a gentle tap and let water run through it until it comes out clear, or draw and expel water with the converter four or five times. Shake out the excess, wrap the nib in kitchen paper, and stand the section nib-down in a cup with a folded piece of paper towel at the bottom. The towel wicks out the last of the water. Reassemble, refill, write.
The full clean, step by step
- Empty the pen. Write the last of the ink onto scrap paper or blot it onto kitchen paper. Don't tip a converter's worth down the sink; it stains, and it wastes it.
- Take apart only what is meant to come apart. Cap off, barrel off, converter or cartridge out. Some nib units unscrew; most do not. Never pull the nib and feed from the section unless the manufacturer says it can be done.
- Flush the section. Run lukewarm water through it, or fit the bulb syringe over the back where the cartridge sits and squeeze until the water runs clear. Flush the converter separately, filling and emptying it in the bowl.
- Repeat with fresh water. Change the water when it turns dark, and keep going until it stays clean and colourless.
- Rinse the barrel and cap. Shake them dry. Don't soak a barrel that houses metal fittings or an internal filling mechanism.
Soaking, stubborn inks and different pen types
When a flush won't shift it, stand the nib section nib-down in a cup of water. Twenty minutes is usually enough; overnight is fine for a badly clogged pen. A single drop of washing-up liquid in the cup helps break down dried ink. Change the water if it colours. Don't leave anything soaking for days, and keep hard rubber, casein and barrels with internal metal parts well out of the water.
Cartridge and converter pens
The most forgiving of the lot. A bulb syringe, a bowl of water and ten minutes will handle almost anything.
Piston and vacuum fillers
Flush by working the mechanism itself: draw water, expel, repeat, changing the water until it runs clear. Twenty cycles is not unusual. Don't unscrew the piston unless the pen is designed for it.
Vintage pens
Be gentler. Sac-fillers should have the section rinsed and the sac filled and emptied with water, never left soaking. Skip ammonia-based flushes on old celluloid, hard rubber and casein. If a vintage pen hasn't been used in decades, a restorer is a better bet than a bowl of water.
Pigment, iron gall and shimmer inks
These reward prompt cleaning. Flush after every fill, reach for a pen flush if the flow drops, and keep a dedicated pen for shimmer if you can. Once flakes settle in a feed, only an ultrasonic cleaner or a long soak will move them.
Drying, reassembly and mistakes to avoid
Shake the section out over the sink, blot the nib, then stand it nib-down on kitchen paper overnight. Air is all you need. A hairdryer, a radiator, a sunny windowsill or a dishwasher will warp plastics, loosen adhesives and ruin a nib. Once everything is dry, screw it back together finger-tight — overtightening cracks plastic — and store the pen empty. A trace of water inside is harmless; the first lines of a new fill may run a little pale, then settle.
Two mistakes cause most of the damage: pulling a nib and feed that were never meant to come out, and soaking something fragile because it seemed easier than flushing. If a pen still skips after a proper clean, look at nib alignment, a tired converter seal or a cracked section. Water won't fix any of those.
A routine that sticks
Keep a bulb syringe and a small bowl near the sink, and clean on the day you change ink rather than promising yourself you'll do it later. Rinse a pen before it goes into storage, not when you next want to write with it. Ten minutes of prevention keeps a fountain pen writing the way it did the day it arrived, which is the whole point of owning one.
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