Is Leuchtturm1917 Good for Fountain Pens? | Paper Weights Explained

Yes, Leuchtturm1917 notebooks handle fountain pens well with fine-to-medium nibs, though the thinner 80 GSM paper shows writing through from the reverse side.

A wet broad nib pressing into thin paper tells you in one stroke whether a notebook can keep up. With Leuchtturm1917, that answer depends almost entirely on which paper weight you buy, not on the brand as a whole. The standard books work fine for everyday writing; the 120 GSM editions are the ones built for serious fountain-pen work. Knowing the difference before you buy saves you from ink showing through every right-hand page.

Does The Paper Weight Decide The Outcome?

Paper weight decides nearly everything here. Leuchtturm1917 sells its notebooks in three paper weights, and each one behaves differently under a nib.

• 80 GSM — the classic Medium A5 hardcover, about 145 × 210 mm. Fine and medium nibs write crisp lines with little feathering, but show-through on the reverse side is common enough to matter for two-sided writing.
• Testing found no show-through or bleed-through with a range of everyday pens, and the paper was described as smoother than other Leuchtturm stock.

Wired’s notebook testing notes the A5 paper works well with nearly every pen tested, while steering heavy-nib fountain-pen users toward heavier paper. That lines up with the 80 GSM reality: normal writing is fine, extreme ink loads are not.

Which Leuchtturm Fits Your Pen And Ink?

The right match comes down to your nib width and how wet your ink runs. A dedicated comparison makes the choice quick.

If you write on both sides of every page with a wet nib, the 120 GSM A5 is the version to get. Wired specifically recommends that model for fountain pens, heavy ink pens, and permanent markers. For lighter daily use, the classic paper holds up without complaint. Once you settle on a notebook, matching it with a pen that suits the paper makes the biggest difference — our tested roundup of pens for Leuchtturm1917 pairs specific models to each paper type.

What Do Buyers Get Wrong About Leuchtturm Paper?

Two mix-ups cause most of the disappointment. The first is confusing show-through with bleed-through. Show-through makes writing visible from the reverse side; bleed-through physically marks or penetrates the page. Standard Leuchtturm 80 GSM paper commonly resists actual bleed-through while still ghosting, and those are very different problems.

The second mistake is assuming every Leuchtturm notebook has identical paper. Weight, format, edition, and manufacturing origin can differ, and user reports describe inconsistent performance among some 80 GSM books. Retailer listings are not always reliable either — one 120 GSM product page even includes contradictory 80 GSM wording. Check the specification printed on the product itself before you buy.

Prices shift by edition and retailer, too.

Common Questions

Will a broad fountain pen nib bleed through Leuchtturm 80 GSM paper?

It can. Broad, italic, stub, and unusually wet nibs create more show-through, and heavy ink pooling may bleed through standard 80 GSM paper. That paper suits normal writing but is not reliably ink-proof. If you favor wide or very wet nibs, move up to the 120 GSM edition.

Is the 120 GSM version worth the extra cost and fewer pages?

For fountain-pen users who write on both sides, yes. The 120 GSM paper showed no show-through or bleed-through in testing and was described as smoother than other Leuchtturm stock. You trade page count — 203 versus 251 — for paper that holds up under saturated inks and wet nibs.

Are Leuchtturm1917 Master notebooks good for fountain pens?

The Master line uses 100 GSM paper, sitting between the standard and 120 GSM books. It suits larger A4 and A4+ formats and desk work, with acid-free, FSC-certified paper. It offers more heft than the classic 80 GSM without the full ink resistance of the 120 GSM edition.