How to sharpen a drawing pencil with a craft knife and sandpaper

In short: Cut away from yourself with a sharp craft knife, shaving only the wood in small, shallow strokes while you turn the pencil. Leave the graphite uncut, then rub it on fine sandpaper at a low angle, turning as you go, for a long, fine point.

By Abu Bakar SaadatPublished 28 October 20265 min readPublisher: Saadat Rafiq

✓ Reviewed by Muqadas Fatima, BFA · 30 October 2026

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At a glance

You need: Sharp craft knife, fine sandpaper or a sandpaper block, scrap paper, a cutting mat
Goal: Cut away the wood only, not the graphite (QAGOMA)
Knife rule: Cut away from your body (Mont Marte) or to the side (Greenwich), never towards your hand
Sandpaper: Pencil at about 10 to 15 degrees, turning it (Mont Marte)
Advice from: QAGOMA, Mont Marte, NSEAD, University of Greenwich, NHS, Faber-Castell, read 28 October 2026
Checked: October 2026

A knife-sharpened pencil gives you a long, exposed point that can draw fine lines with the tip and broad tone with the side. QAGOMA's drawing series calls the knife the more effective way to sharpen graphite drawing pencils, and the aim is to cut away the wood only, not the graphite. The knife is the risky part, so read the safety box before you pick it up.

Which point do you want?

Long, round point

For fine lines and detail. Knife the wood back, then turn the pencil as you rub it on sandpaper (Mont Marte).

Chisel point

For crisp edges and broad tone. Shade one side flat on sandpaper at an angle. The edge gives fine lines and the flat side gives tone (QAGOMA).

Soft charcoal or pastel pencil

Same method, but tiny cuts and very light pressure, because the core is soft (Mont Marte).

How to sharpen the pencil

Set up over a cutting mat with a fresh blade.

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Sit at a table, put scrap paper on the mat to catch shavings and graphite dust, and check the blade is sharp. If it drags or tears the wood, change the blade before you start (Mont Marte).

You should see: a clear space in front of you, with nothing in the path of the blade.
Careful: the blade moves away from you, and your thumb stays behind it. Never put a finger in front of the edge.

Hold the pencil pointing away from you and rest the blade on the wood.

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Hold the pencil firmly in one hand. Rest the blade at a shallow angle on the wood, a little way back from the existing tip. Mont Marte suggests angling the blade at the edge of the wood and using your thumb to control it: the thumb of the pencil hand pushes gently on the back of the blade, so the stroke is short and controlled.

You should see: the edge of the blade pointing away from you and away from your fingers.
Shave off the wood in small, shallow strokes, turning the pencil.

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Take a thin slice of wood with each push, then turn the pencil a little and take the next one. Mont Marte's advice is small, shallow cuts and rotating the pencil for even slices. Don't press hard: the wood comes off more easily than you'd think.

You should see: thin curls of wood and an even cone of bare wood forming all the way round.
Expose the graphite, but don't cut into it.

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Keep shaving the wood until a length of graphite sticks out. QAGOMA's point is to cut away only the wood and not the graphite itself, so stop the blade where the wood ends. How much to expose is your choice; a length about as long as the wooden cone is a sensible start (our suggestion, not from a source). A very long point snaps more easily if you press hard.

You should see: bare graphite with a blunt end, standing out of a clean wooden cone.
Rub the graphite on fine sandpaper at a low angle, turning as you go.

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Hold the pencil low, about 10 to 15 degrees from the sandpaper, and move it back and forth while twisting it so it wears evenly (Mont Marte). For a chisel point, don't turn it: shade one side flat on the paper at an angle (QAGOMA).

You should see: a fine, tapered point, or a flat chisel face if you chose that.
Wipe the point, then put the knife away safely.

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Draw a few strokes on scrap paper to take off loose graphite dust before you touch your drawing. Retract or cap the blade. Keeping the sandpaper block in a small bag stops the dust from getting onto your work (both our tips).

You should see: a clean, fine test line, and the blade covered.

How to tell it worked

The wood is cut back evenly all the way round, with no deep gouges.
The graphite has no knife cuts on it (QAGOMA).
The point draws a fine line from the tip and broad tone from the side (QAGOMA).
The blade is covered and the shavings are in the bin.

If something goes wrong

What happens	What it means	What to do
The blade catches and tears the wood	The blade is blunt, or the cut is too deep	Change the blade and take shallower cuts (Mont Marte)
The graphite keeps snapping	Too much pressure, or a soft core	Use a lighter hand, especially on charcoal and pastel pencils (Mont Marte)
The point is lopsided	The pencil wasn't turned evenly	Rotate a little after every cut and on the sandpaper (Mont Marte)
You are pushing hard to cut	Blunt blade: a slip is more likely	Stop and fit a new blade (NSEAD)
You cut yourself	-	Stop the bleeding, clean it and cover it (NHS). Call 999 or go to A&E if it won't stop bleeding, is very large or deep, is a bad cut on your palm, or has something stuck in it; don't pull the object out (NHS)

Questions readers ask

Why use a knife instead of a sharpener?

A knife lets you remove only the wood and leave the graphite, so you get a long exposed point and waste less lead. QAGOMA's drawing series notes that ordinary sharpeners grind the graphite away as well, so pencils get used up faster.

Can children do this?

Mont Marte says to use a hobby knife only under adult supervision. For younger children, a good handheld sharpener plus a sandpaper block is the safer choice.

Does this work for charcoal and pastel pencils?

Yes, but use a much lighter hand. Mont Marte says pastel, charcoal, woodless and watercolour pencils have soft cores, so take small, shallow cuts and don't press hard.

What grit of sandpaper should I use?

Fine paper is best for the final point. Faber-Castell's sandpaper block comes with a fine and a coarse strip; no source we read names an exact grit, so start with the finest paper you have and only use coarse paper to remove a lot of graphite quickly.

Sources

We base our articles on the makers' official documentation.

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