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The Purl Bug

Analog distractions in a digital age
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Science Stuff episode 2 - how pencils work

September 30, 2015

Thanks everyone for a wonderful Pencil Month! Wrapping it up today with some of my rusty chemistry knowledge and attempt to enlighten you as to how pencils work on a chemical level.

Here are the links to information I used to put this video together:

Basic info about graphite
SEM image of the surface of paper
Basic info about pencils
Basic info about erasers
Patent for method of preparing pencil cores

And here is the step-by-step process that is used to put pencil cores into the wooden slats

In video, pen, chit chat Tags pencil, science stuff, video
← Twist Bullet Pencil giveaway winner!PSST! →

Sometimes, I take pictures of things...

Just finished my first pair of “work socks” here in AL! These have lived in my desk drawer since the start of the year and I get a few rows done when I’m in meetings or debugging code. The stripes matching up after the gusset was 10
Spherical farm animals found in the wild!
New podcast is up! Wherein I only talk about ~one~ project and why I’m going to shift my focus to being a very monogamous knitter for a while. Curious? Links to everywhere you can find it are in my profile. :-)
The body is finished! I kitchenered all 221 stitches of ribbing to the bottom because apparently I hate myself *a lot* but I really like how clean the bottom edge looks.

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