For all of you coin enthusiasts out there and elongated penny collectors, you will probably find this Instructable very helpful. I collect elongated pennies (you know, those penny smashing machines you see in museums and whatnot) however, after a while the pennies would start to lost their shine because of oxidation (in layman's terms: when the pennies are exposed to air, they lose their shine gradually)
I found out that you can restore the shine by rubbing a pencil eraser on the coin and therefore polishing it, however the process is long, hard, boring, and it kills your wrist.
The way I polish pennies uses the same concept, but is much more faster.
The pros and cons of this method are:
-No volatile chemicals/ fumes
-You could get a better shine with chemicals
-It would be faster with chemicals
When I write Instructables I put multiple pictures showing multiple steps on only one step, so be sure to look at all of the pictures.
Step 1: The tools
-A small vice
-A bunch of those cheap pencils you can get at the dollar store
-A small saw (like one you'd get on a multitool)
-Dirty, oxidized pennies just waiting to be polished
Step 2: Prepare the tool you will use to polish with
Just look at the tags in all of the pictures so you know exactly what to do.
Basically what you're doing is using the eraser part of the pencil with the drill in lieu of a drill bit.
I would write all of the steps up here, but I find that it's annoying to keep looking up at the instructions and the down at the pictures, so I made it so it's easier to view the pictures and the instructions.