Bad Case of Black Thumb
This ever happen to you? You're all done making your batch of collet buttons, dutifully inserting that copper lockpin one by one by one. The next thing you know your thumb and forefinger are all black! WTH?!?, you may ask yourself.Well, my friends, you did not receive a dirty batch of lockpins. No, this black thumb is the result of oxidation.
Apparently the acidic nature of your sweat makes the electrons in the copper lockpin go crazy! They freak out and jump from the copper over to your skin, creating this lovely black metallic stain. It's kinda like what happens when you wear copper jewelry. Never fear the black thumb! Just go wash your hands. ;)
3 comments:
I keep baby wipes at my desk so that I don't have to keep getting up to wash my hands. Lazy? Yes!
I use a plastic thimble when dealing with the copper pins for my 1 inch badges - I wasn't worried about the black so much, it was the damage it did to my thumb nail! :( I also find it heaps easier to push the pins in using the thimble!
Hi Guys,
Those are both really good suggestions!
Thanks!!
Rebecca
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