What Happens To A Zincoln @ 400 Deg. For 30 Minutes - Page 2

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Author	Replies: 25 / Views: 3,319	Page: of 2

akane17 Valued Member United States 404 Posts	Posted 07/27/2011 2:56 pm Hmmmm...I have a heat press...and a lot of coins...and some free time at work...I wonder what will happen. Report this Post to the Staff
brenpickle Pillar of the Community United States 836 Posts	Posted 07/27/2011 3:00 pm I need this to some penny. It is a good way to figure out if 1982 are zinc or copper. The zinc ones you can break, the copper you cant. I do it at degrees though for 8minutes. Report this Post to the Staff
Wild Bill Pillar of the Community United States 744 Posts	Posted 07/27/2011 3:50 pm I had to barbecue another one, I toss the 1999 back.... I believe that where I have the coin might get a little hotter than the thermostat says it is..... I feel that the zinc gets warm enough to absorb the thin copper plating.....if I had to guess Does this make sence? Report this Post to the Staff
timsumrall Pillar of the Community United States 1256 Posts	Posted 07/27/2011 5:59 pm taste like chicken of course Report this Post to the Staff
Bowfin Valued Member United States 296 Posts	Posted 07/27/2011 7:35 pm Quote: I feel that the zinc gets warm enough to absorb the thin copper plating.....if I had to guess Does this make sense? I thought I read somewhere that is how they alloy the 2 metals together in the first place to make brass. I also thought someone here posted they were filing the edge of zincolns to expose the zinc, them heating them up to melt the zinc. The zinc poured out through the filed hole producing a hollow copper shell of a cent. I really don't know... I'm too lazy to research it. Have you tried cleaning them to see what is underneath? Report this Post to the Staff
Wild Bill Pillar of the Community United States 744 Posts	Posted 07/27/2011 10:15 pm the 1983-D cent was scrubbed with a tooth brush and coin conditioner to see if I could get back to the copper color, but could not Report this Post to the Staff
penny man Pillar of the Community United States 659 Posts	Posted 08/04/2011 2:20 pm I did the same thing, but at a higher temperature. if you leave them on long enough, they get to the size of a nickel. Edited by penny man 08/04/2011 2:21 pm Report this Post to the Staff
coinmap Valued Member United States 266 Posts	Posted 08/04/2011 2:58 pm Looks like Jiffy Pop popcorn Report this Post to the Staff
jbuck Moderator United States 188770 Posts	Posted 08/04/2011 2:59 pm Quote: I did the same thing, but at a higher temperature. Ouch! That poor cent looks like it was tortured! Coin Collector Since 1978 Avatar Old Avatar 7070 Eisenhower Australia Canada World CCF Members on eBay CCF eBay Search Engine Report this Post to the Staff
BadThad Bedrock of the Community United States 19961 Posts	Posted 08/04/2011 3:14 pm Zinc has a much, much lower melting point than copper. When a zincoln is heated, the zinc will tend to migrate to the surface and cover the copper creating a pseudo zinc plating. If you heat a copper cent, you'll see it will take on a silver appearance because tin and zinc tend to the surface creating a "silver" cent. This is most likely why you see some many posts about "silver" colored cents in coin forums. Lot of cents get exposed to heat and the process is quite simple. Lincoln Cent Lover! VERDI-CARE™ INVENTOR https://verdi.care/ Report this Post to the Staff
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