Re: Machining an Egg

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: David Speck <dave@xxxxxxxxxxxxxxxx>

Dave,

Current pennies are only a couple percent copper, and are mostly zinc inside.
I guess you could use old copper pipe, but copper melts at 1984 
degrees F, not something you can achieve without a decent furnace, 
casting equipment, and protective gear.  IMHO, it would be a lot 
easier to start from eBay rod stock.
Dave Speck

Tesla list wrote:
> Original poster: "Dave" <dgoodfellow@xxxxxxxxxxxxxx>
>
> Perhaps you could make a mold from an egg, get a few rolls of 
> pennies, or scrap copper, and cast your own egg. Then it could be 
> cleaned up on a lathe. Someone on the list probably knows some 
> casting techniques and can advise.