How to Fix a Scratchy Nib: Alignment, Baby's Bottom & Micromesh

How to Fix a Scratchy Nib: Alignment, Baby's Bottom & Micromesh

A scratchy nib is rarely a defective pen. Nine times out of ten it is one of a short list of fixable causes — and most of them cost nothing to correct. The trick is to diagnose before you touch anything, because the wrong "fix" (grinding a nib that only needed its tines nudged level) can turn a cheap annoyance into a ruined tip. Work through the causes in order.

First, rule out the free causes

Before you reach for tools, eliminate the three things that masquerade as a bad nib:

• Angle and rotation. A fountain pen wants to be held at roughly 40–55 degrees with both tines flat on the paper. Rotate the pen even slightly and one tine digs in — instant scratch. Consciously roll the pen until it feels smooth; you may be holding it off-axis.
• Cheap, toothy paper. Rough copy paper drags on any nib. Test on a known-good surface like a Rhodia dot pad before blaming the pen.
• Feedback vs. scratch. A fine or Japanese nib gives faint "pencil" feedback by design — that is not the same as a scratch that catches and skips. A Japanese Fine feels toothier than a Western Fine at the same label; that is normal, and explained in Japanese vs Western nib sizes.

If it still catches on good paper at the right angle, it is the nib. Get a 10x loupe — you cannot fix what you cannot see.

Cause 1: tine misalignment (the most common)

Look at the nib head-on and from the side under the loupe. The two tines should sit perfectly level, meeting at the tip. If one sits higher or lower than the other, that edge drags — this is by far the most common cause of scratch.

The fix is gentle: with the nib pointing up, press the higher tine down level with a fingertip or thumbnail, or nudge them into plane with very small movements. Tiny adjustments — check with the loupe after each. Most "scratchy" pens are cured right here, with no abrasives at all.

Cause 2: baby's bottom (skips and hard-starts more than scratches)

Baby's bottom is an over-rounded tip: seen from below, the tipping is polished so convex that a tiny gap opens at the very center of the sweet spot. It shows up as skipping on light pressure and hard starts on downstrokes — often mistaken for scratchiness. Two fixes: a wetter ink can bridge the gap, or you gently smooth the tip to open the sweet spot (below). Because it presents like a flow fault, cross-check the full flow checklist in how to stop skipping and hard starts.

Cause 3: grit, burrs, or a dropped nib

A nib dropped on its tip can bend a tine or raise a burr; debris can also lodge in the slit. Run the pen under water and floss the slit with a brass shim (thin brass stock, softer than the nib) to clear anything caught. If a tine is visibly bent from a fall, that is nibmeister territory, not a home fix.

Smoothing with micromesh — the careful part

Only smooth once you are sure the tines are aligned and the problem is a rough tip or baby's bottom. You are removing microns of tipping, and you cannot put it back.

1. Ink the pen — you smooth under ink or water, never dry.
2. Use high grits only, roughly 3200 to 12000. A micro-mesh nib kit has the right graded sheets.
3. Write gentle figure-8s with almost no pressure, rotating through your natural writing arc so you touch every part of the sweet spot.
4. Check with the loupe often and stop early. A handful of light passes usually does it. Over-smoothing creates the very baby's bottom you were trying to fix.

Find the rough spot first

Before any smoothing, locate exactly where the nib catches. Write slow loops and figure-8s and notice which direction drags — a catch only on upstrokes points to a tine edge or the tipping, while a catch in every direction points to a rough tip or a bad angle. Note which tine sits high under the loupe. Smoothing blind, without knowing where the roughness actually lives, is how people flatten a sweet spot that was fine and create a fresh problem on the far side of the tip. Two minutes with a loupe and a slow test sentence will save a nib you would otherwise ruin.

The easy out — and when to send it away

If you own a Lamy Safari, remember its steel nibs pop off and a replacement unit costs only a few dollars; sometimes the fastest fix is simply a new nib. And for gold nibs, expensive pens, or anything you are unsure about, stop — a nibmeister will align, smooth, or regrind it for a small fee, by mail or at a pen show. That is far cheaper than replacing a tip you ground through. Whether gold is worth repairing at all is weighed in steel vs gold nib.

One more prerequisite: make sure the pen is clean first. Dried ink and grit in the feed mimic a scratchy, skippy nib, and a flush may be all you need — see how to clean a fountain pen. The pens least likely to need any of this are ranked at the /best hub, and the nib finder matches a smooth nib to your hand.