can you weld coins together

[ak4130]

Just wondering..I was bored, with the tig machine, tried welding 2 pennies together in a lap joint...Very low amps.A small puddle formed on the bottom one and the top one just burned away

[millrat]

What kind of heat sink is the bottom one laying on? One is getting hotter than the other. Guess which one.

[ak4130]

Yeah thats kinda what I figured..Its a 1/2" thick steel table and I had them just laying on it

[Sandy]

Most of the pennies out there are copper coated zinc. Zinc has a pretty low melting point. Scrape one with a knife hold it to a flap wheel/grinder, it'll be silvery under the copper.

[DSW]

Originally Posted by Sandy

Most of the pennies out there are copper coated zinc. Zinc has a pretty low melting point. Scrape one with a knife hold it to a flap wheel/grinder, it'll be silvery under the copper.

Yeah to have any luck you'd probably have to look for some older pennies. I forget exactly when they changed over to the zinc cored/copper coated ones, but I think it was in the mid70's at some point. Definately by the early 80's.

[BruceTS]

Last year for a copper penny was 82, but that was also the first year the zinc one was introduced. Hehe I used to remember using a pair of scissors to cut them in half and mess with people having them try cutting the same year penny but the copper one....

[Shox Dr]

Not two coins but one.

Mate brought his van key around the other day, stealers wanted 275GBP to cut a new one

So I brazed a Two pence (British Coin) to the shaft.

Sifbronze No8
Red 1.6mm Tungsten
20ish amps

[AyAy]

Two spots on each side and she's together again. (My welder is made for this kinda stuff).

[weldbead]

stack of dimes

[weldsupply]

You can weld the new pennies together using 4043 aluminum as filler.. it bonds well with the zinc if you don't overheat it.. I just tried it a few mins ago. Tig, DC- low low amps..

[zapster]

Originally Posted by weldbead

stack of dimes

To a whole nother level...



You do realize you wasted 40 cents...

...zap!

[zapster]

Originally Posted by weldsupply

You can weld the new pennies together using 4043 aluminum as filler.. it bonds well with the zinc if you don't overheat it.. I just tried it a few mins ago. Tig, DC- low low amps..

Pics man...
We need pics...

...zap!

[BlueArc]

Wouldn't this be considered defacing govt currency? You never know who's watching

But LOL at the stack of dimes.

[weldsupply]

probably more than wrong.. I was just playing in the shop and thought I would try it.. Googled it afterwards, saw the post, and didn't see an awnser to the penny part.. thought I would throw in my 2 cents..

[umahunter]

you didnt deface anything just made the new 40 cent piece dam dime wont buy much buy itself these days

[Stick-man]

He gave up hope and now it's soo bad he's giving up change!

Sorry, I couldn't resist.

[Kelvin]

Originally Posted by Shox Dr

Mate brought his van key around the other day, stealers wanted 275GBP to cut a new one

So I brazed a Two pence (British Coin) to the shaft.

Wow, that's a CAR KEY? Pretty darned simple key! Gimme a nail and a file and a hammer and I bet I could make one in about a minute!

[weldbead]

Originally Posted by zapster

To a whole nother level...



You do realize you wasted 40 cents...

...zap!

i did that a few years ago when i was still working..had money coming in...

[dugndeep]

Originally Posted by weldbead

i did that a few years ago when i was still working..had money coming in...

A few years before the "money is no object" congressmen took office

I couldn't resist