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.
rickharris4 years ago
Oddly a bit of dry bread will work as well!

Duh! FYI, that's what people used to erase pencil marks before the eraser was invented.

CamDAX (author)  rickharris4 years ago
Also why goto the kitchen when theres a pencil right on my desk?
CamDAX (author)  rickharris4 years ago
Not when you have Celiac disease.
dgarcia64 years ago
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 "Carbon Zinc Battery" there is no graphite. Graphite is usually found in Lithium Ion Batteries. Just an FYI.
CamDAX (author)  dgarcia63 years ago
Well the rods work pretty well to make a cold heat soldering iron
Graphite is a carbon mineral that conducts electricity.
rickharris4 years ago
You don't need to eat it!
CamDAX (author)  rickharris4 years ago
To tell you the truth I don't need to eat it to get sick. I got sick from shampoo before. It’s just like how you can’t have penults on a air plane, I can’t have bread in my house.