How to Refill Mechanical Pencil

How to Refill a Mechanical Pencil with 0.7 HB Refills.

Learn how to open your mechanical pencil and insert new 0.7 HB lead refills. The process can vary a bit depending on your pencil model, so I’ll show you the most common type.

What You Need to Know Before Refilling

Most mechanical pencils work the same basic way. You press the top to push out more lead, and you store extra refills inside the barrel. If your pencil has a 0.7 label on it, you must buy 0.7 refills. A 0.5 refill will be too small and won’t work in the mechanism.

Step-by-Step Guide to Refill Your Mechanical Pencil

Step 1: Remove the eraser

Most mechanical pencils have an eraser under the top cap. Pull off the cap, then pull out the eraser. Underneath, you’ll find a small chamber where extra lead refills are stored.

Step 2: Check if you have any lead left inside

Press the top of the pencil a few times to see if any lead comes out. If nothing comes out, your pencil is empty. If a small piece is stuck, you can press the top and gently pull out the old piece with your fingers.

Step 3: Insert the new refills

Take your 0.7 HB refills and drop them into the open chamber where the eraser was. I recommend only putting in two or three refills at a time. More than that can get crowded and might jam the mechanism.

Step 4: Put the eraser and cap back

Push the eraser back into place, then put the cap on. Make sure everything sits flush.

Step 5: Advance the new lead

Press the top of the pencil several times while holding the pencil pointing down. You may need to press 5 to 10 times before the new lead starts coming out of the tip. Be patient – it takes a few clicks.

Step 6: Stop at the right length

Once you see lead coming out, only click one or two more times. A good rule is to keep the lead extended about the length of a pencil tip – roughly 2 to 3 millimeters. If you extend it too far, the lead will break very easily when you write.

Lead Sizes and Types Explained

Popular lead sizes

The two most common mechanical pencil lead sizes are 0.5mm and 0.7mm. There is also 0.9mm, which is thicker and stronger. Your pencil will have the size printed on it somewhere, often near the tip or on the barrel.

What HB means

HB is the standard lead hardness for most writing. It sits in the middle of the scale – not too soft and not too hard. Softer leads (like B or 2B) make darker lines but smudge more and break easier. Harder leads (like H or 2H) make lighter lines but feel scratchy.

0.7mm vs 0.5mm – which is better

0.7mm lead is thicker and stronger, so it breaks less often. It works well for everyday writing and for people who press down firmly. 0.5mm lead is thinner and good for small handwriting or detailed drawing, but it breaks more easily. If you’re new to mechanical pencils, 0.7mm is usually the easier choice.

Extra Tips

Don’t extend the lead more than you need. The longer the exposed lead, the more likely it is to snap. Two clicks is usually plenty.

If you hear loose refills shaking inside your pencil, that’s normal. You only put in two or three, so they have room to move around. If you don’t like the noise or the feel, just keep one refill in the pencil at a time.

If your pencil has a soft rubber grip that starts feeling sticky or melting over time, that can happen with some older pencils. The rubber breaks down after a few years. If yours smells strange or feels gooey, it might be time to replace the pencil.

That’s all there is to it. Keep your lead at a reasonable length, use the correct size refills, and your mechanical pencil will work well for a long time.