The Steampunk Forum at Brass Goggles
October 24, 2017, 12:37:43 pm *
Welcome, Guest. Please login or register.
Did you miss your activation email?

Login with username, password and session length
News: Support BrassGoggles! Donate once or $3/mo.
 See details here.
 
   Home   Blog Help Rules Login Register  
Pages: [1]   Go Down
  Print  
Author Topic: How to make a coin?  (Read 7031 times)
Demosthenes
Snr. Officer
****
United States United States


Resident Atompunk


WWW
« on: September 30, 2010, 04:11:56 am »

How would one go about making a cast or stamped coin? I'd like to make one but I don't know how.  The metal isn't very important Smiley
Logged

"I think this is the most extraordinary collection of talent and of human knowledge that has ever been gathered together at the White House — with the possible exception of when Thomas Jefferson dined alone."
“Kerplach” = “Guv’nah!”
jringling
Time Traveler
****
United States United States


convicted Rogue and Vagabond…long story…


WWW
« Reply #1 on: September 30, 2010, 04:20:56 am »

You could always etch one...
Logged

Andi
Gunner
**
United States United States



« Reply #2 on: September 30, 2010, 04:30:13 am »

This may sound like an odd suggestion, but you might want to talk to some viking reenactors.  There's a guy in Missouri who made them over a campfire, using a mold of some sort and melted metal.  i have no idea what it was that he melted or how he got it hot enough, or what he used for a mold, but I think it might have been carved stone for the mold.  He said the method he used was common among Vikings, if I'm remembering right. it was really quite nifty to watch.

Beyond that, though, if you don't care about the material, you might try metallic polymer clay or metal clay with a basic mold.  If it's small, I think you can torch fire the metal clay.  Polymer clay you can bake.
Logged

"What a wee little part of a person's life are his acts and his words! His real life is led in his head, and is known to none but himself."  - Mark Twain
Dave the Troll
Zeppelin Captain
*****
United Kingdom United Kingdom


Corporal Grease - Her Majesty's Own Mars Engineers


« Reply #3 on: September 30, 2010, 09:46:37 am »

How many do you want to make?

I've made them in the past by creating a silicon rubber mould and casting model metal.  We made a couple of hundred that way.

It requires few tools and no heat source that you don't have in you kitchen.
Logged
Demosthenes
Snr. Officer
****
United States United States


Resident Atompunk


WWW
« Reply #4 on: September 30, 2010, 03:29:21 pm »

I don't want to make many, just a few to give to friends and such.  It's for the 'Shire Society' and I wanted it to be an alternate history piece. 'The Shire' is New Hampshire Smiley

Even more than the coins, I want to make an old style dollar, but I haven't got the artistic talent for it.
Logged
Andi
Gunner
**
United States United States



« Reply #5 on: September 30, 2010, 03:53:35 pm »

Seems like you should be find that online somewhere and print it off...
Logged
JingleJoe
Zeppelin Overlord
*******
United Kingdom United Kingdom


The Green Dungeon Alchemist


WWW
« Reply #6 on: September 30, 2010, 04:33:55 pm »

I once made some of my own currency by filing off the design on copper tuppences and electrolytically etching a design in them.
Logged

Green Dungeon Alchemist Laboratories
Providing weird sound contraptions and time machines since 2064.
itsakobold
Gunner
**
United States United States


« Reply #7 on: September 30, 2010, 09:10:11 pm »

I've made coins by striking them.

You have a two part die, a top and bottom, line the metal up on them, hit them with a big hammer, and there you go. It takes some getting used to, and I was using dies somebody else had made, but it worked.
Logged
peps1
Deck Hand
*
United Kingdom United Kingdom



WWW
« Reply #8 on: September 30, 2010, 09:16:19 pm »

Etching is going to be the quickies, and easiest way to do it. could do this with electrolysis or more simply with a chemical etchant like Ferric chloride.

Coin size brass disks are really easy to find too, and there are a tone of people on here who could talk you though it step by step.
Logged

jringling
Time Traveler
****
United States United States


convicted Rogue and Vagabond…long story…


WWW
« Reply #9 on: September 30, 2010, 11:20:34 pm »

I will echo the etching route... one or two sided...

The picture doesn't show the depth and these were turned into pins, but they felt like playing with gold coins before I put the pinback on...

Spoiler (click to show/hide)
Logged
Demosthenes
Snr. Officer
****
United States United States


Resident Atompunk


WWW
« Reply #10 on: September 30, 2010, 11:26:01 pm »

That Celtic society one is pretty cool! And I'm in Baltimore, not all that far off!
Logged
JingleJoe
Zeppelin Overlord
*******
United Kingdom United Kingdom


The Green Dungeon Alchemist


WWW
« Reply #11 on: October 02, 2010, 10:05:11 pm »

Get Mr Ringling there to etch you some coins Cheesy
Logged
Rao
Snr. Officer
****
United States United States


TheGeekFather
WWW
« Reply #12 on: October 04, 2010, 05:52:09 am »

It really depends on whether you want them out of metal or resin. Resin is probably the easiest to mass produce and an individual should be able to do most of it out of a home work area. (ventilated). For coins you will want to make the prototype coin. (heads and tails) OR You can just do a one sided coin. If you go to a ren fair or pirate festival in your area some of the vendors sell one sided doubloons. just makes the process easier. Push the prototype into the clay four or five times or more. Makes it easier so you don't have to make really small batches of resin. Some types of resin you can even mix metal powders into so one the casting is cured you can buff it with some 0000 steel wool and have it turn out looking just like metal. Or even buy the more expensive pre-mixed metalic resins. Or if you make a silicon mould you can spray paint the mould before casting and it will transfer to the casting.

If you want to go with metal then etching is probably your best be, as a press is difficult and expensive to make a master.

Seriously do a google search and read instructables, how tos, youtube videos. Actually you can look up almost anything on youtube and see a video how too.


Logged

Raolin Aeromancer

Tinkerer
Narsil
Immortal
**
United Kingdom United Kingdom



WWW
« Reply #13 on: October 04, 2010, 11:49:52 am »


For making resin coins there are advantages in making up a putty by mixing the resin with talc filler and metal powder and press moulding it rather than pouring it. This means you can do double sided coins without having to clean up sprue afterwards or where to place the sprue in the first place without interfering with the design. Filled resins will also make for a stringer finished product.

You could also make coins in two halves (ie heads and tails) and glued them together afterwards.
Logged







A man of eighty has outlived probably three new schools of painting, two of architecture and poetry and a hundred in dress.
Lord Byron
akumabito
Immortal
**
Netherlands Netherlands


Mundus Patria Nostra!


WWW
« Reply #14 on: October 04, 2010, 07:59:20 pm »

If you'd need many, you can have a looksy at companies like this: http://www.challengecoinsplus.com/pricing.html
Logged

rovingjack
Zeppelin Admiral
******
United States United States



WWW
« Reply #15 on: October 05, 2010, 10:42:04 pm »

really easy would be to buy sculpey in metalics, two rubber erasers. carve a stamp of you design in each eraser. for a rough edged coin just put a free form disk between stamps and press. Then bake.

For regular or smooth edges, you can use someth like a deckle.

You can also use dark sculpey, and paint (or rub and buff) them metallic.

Pewter is a low melt metal that might be good for this.

The same methods can be applied to pewter as to the deckled polymer clay approach. Just use Higher temperater tolerant materials.

There are other ways but those are easiest, I think.

Where abouts in NH? Manchester concord region or further north toward littleton or Colebrook?
Logged

HR
Zeppelin Captain
*****
United Kingdom United Kingdom


If at first you dont succeed, hit it with a hammer


« Reply #16 on: October 20, 2010, 05:11:06 pm »

A simple way to make metal coins is to make a master out of millyput or something similar. You then need to make the mould, this can be done several different ways, you can press the original into kuttlefish bone (as in the stuff you give your budgy Cheesy) but I find you dont get much definition. The second way is to make a mould using plaster of paris, good but not that durable, however so long as you keep the original safe you can always make another. The best way (obviously) is with ruber mould making resin, its hard waring and flexible but a bit more expensive. Then just get some pewter, old tankerds and the like are a good source, melt in an old pan over a camping gas fire, and pore into the mould, repeat as needed.
Coins, both cast and struk are something I make as part of my living, so if you need any other pointers just let me know.
Logged
HR
Zeppelin Captain
*****
United Kingdom United Kingdom


If at first you dont succeed, hit it with a hammer


« Reply #17 on: October 20, 2010, 05:32:45 pm »

Forgot to say, dust the mould with talcum powder before poring in the pewter, this makes getting the casting out much easier.
Logged
Pages: [1]   Go Up
  Print  
 
Jump to:  

Powered by MySQL Powered by PHP Powered by SMF 1.1.20 | SMF © 2013, Simple Machines Valid XHTML 1.0! Valid CSS!
Page created in 0.036 seconds with 17 queries.