So here was my dilemma. I was extracting the graphite rods out of two carbon-zinc batteries for my instant cooling soldering iron. I was putting the gray powdery stuff (I think it was graphite) that’s around the graphite rod in a plastic bin. When the unthinkable happened, I spilled the gray stuff all over my brand new apple keyboard. I was like oh well there’s probably a tutorial on Instructables for this. To my surprise there wasn’t.

I tried alcohol and a cotton swab but that didn't pick up much. So I thought I and my keyboard were doomed. Then one day I realized A PENCIL! It’s uses graphite and it uses an eraser to remove the graphite from the object u are writing on. So I tried the eraser and voila magic the graphite was coming off. So if you ever get graphite on your favorite or brand new keyboard use a pencil eraser and it will come right off.  This mite work for other substances.
Oddly a bit of dry bread will work as well!
<p> Duh! FYI, that's what people used to erase pencil marks before the eraser was invented.</p>
Also why goto the kitchen when theres a pencil right on my desk?
Not when you have Celiac disease.<br>http://www.ncbi.nlm.nih.gov/pubmedhealth/PMH0001280/
The battery casing is Zinc. The gray stuff around the rod is a carbon / manganese dioxide mixture and the rod is not graphite it's carbon, hence the name &quot;Carbon Zinc Battery&quot; there is no graphite. Graphite is usually found in Lithium Ion Batteries. Just an FYI.
Well the rods work pretty well to make a cold heat soldering iron
Graphite is a carbon mineral that conducts electricity.
You don't need to eat it!
To tell you the truth I don't need to eat it to get sick. I got sick from shampoo before. It&rsquo;s just like how you can&rsquo;t have penults on a air plane, I can&rsquo;t have bread in my house.

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