wilkingj
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| posted on 13/8/08 at 02:20 PM |
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How do I forge Coins?
I want to make some metalic coins that are forgeries.
Now before you all shout its Illegal, I want to impress this is for a Role playing game that my son in involved in, and the coins are actual metal
coins. However, they are specific to the game world and do no represent or look like any coin in the real world.
Oh, and the game rules say we have to make them ourselves, ie no going to someone like a comemarative minting company and having them made.
Obvious ways are casting, or stamping.
Anyone got any ideas for getting stamping dies made?
I can use a workshop 10 ton press, for stamping.
I am not looking at making thousands, just a few tens of coins for the game.
I do have the actual coins to use as a pattern.
What for the team think??
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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02GF74
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| posted on 13/8/08 at 02:25 PM |
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chocolocolate coins, you can eat them once the game is over.
making the die is the hard part; for the coin blank use copper, aluminium or gold as they are soft.
are you able to amke a pantograph? basiacally you make your dsign 2 or more times fulkl size and then reduce it to the die; a fine point dremel to
cut the die.
if it is say in somehting like mild steel, then heat it up covered in carbon to case harden the sruface. You should get some reasonable looking
stamped coins out but it would deteriorate quite quickly.
[Edited on 13/8/08 by 02GF74]
for thosa wh don;t know what the f*** I;m on about; 3 D
pantograph that one is 1:1 but with some ingenuity, it can scale down.
[Edited on 13/8/08 by 02GF74]
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tegwin
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| posted on 13/8/08 at 02:38 PM |
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hmm...when I was an apprentice we used to turn brass rod into "pound" sized disks....they worked a treat in the vending machines down the
corridor...
amazing really how tight the tollerances had to be to make it work
------------------------------------------------------------------------------------------------------------------------
Would the last person who leaves the country please switch off the lights and close the door!
www.verticalhorizonsmedia.tv
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Howlor
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| posted on 13/8/08 at 02:54 PM |
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Dependent on the intricacy of the design you could get a die easily turned up, then engraving may be ok dependent on the detail.
You really then need some soft metal blanks that are just a bit thicker than the finished die depth and fly press them together.
The other way would be to sand cast them out of lead or an equivalent lead free solder stuff.
If you really want some fun you could look around on Utube and set yourself up an exothermic reaction similar to how they fuse railway lines together
in some places. Then you can alu cast them easily!
Steve
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David Jenkins
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| posted on 13/8/08 at 02:54 PM |
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Any reason why the coins can't be made from aluminium discs?
Makes it much easier to make the dies, etc.
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speedyxjs
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| posted on 13/8/08 at 03:09 PM |
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quote:
Originally posted by 02GF74
chocolocolate coins, you can eat them once the game is over.
Mmmmm chocolocolate 
How long can i resist the temptation to drop a V8 in?
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twybrow
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| posted on 13/8/08 at 03:18 PM |
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Low Melt Point Alloy! This stuff is awesome. The stuff I use melts at 96C, and is perfect for casting. You wont need super expensive tooling, just
something that takes at least 120C. Cast two halves then bond together, or cast a single piece and knock of the nubbin!
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aerosam
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| posted on 13/8/08 at 03:21 PM |
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I used to know an old feller (now passed on) who used to do alot of pewter and lead casting - small intracate figurines, crosses replica medals
etc.
He carved them by hand from balsa wood then made a hard rubber mould in 2 halves. He would then melt his metal in an old tin cup on the stove and just
pour it in. A few minutes later and hey presto - a perfect copy of the original.
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smart51
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| posted on 13/8/08 at 03:36 PM |
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Solder melts at very low temperatures. (don't get the flux cored stuff). Make moulds out of modling clay and allow to dry.
Or, press the coin of your choice (not legal tender for obvoius reasons) into a block of clay and make fibreglass male then female moulds. metal
powder mixed with just a little polyester resin makes stuff that looks very similar to metal when the shine is sanded off. You could have an engraver
make 1 coin for you then cast as many as you want.
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Dangle_kt
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| posted on 13/8/08 at 04:00 PM |
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Why not etch the image of the coin onto the metal, I'm sure there is a way of getting some sort of transfer that you can spray etching compound
over.
What about clear laminate with the picture printed on and just sticking it in place.
Just an idea as its only for a game?
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swanny
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| posted on 13/8/08 at 04:17 PM |
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how about glass coins? would look futuristic and glass etch is available in cans from hobby shops. guess the trick would be getting disks cut. maybe
some of those fancy glass tiles for detakils in bathrooms?
http://www.ivillage.co.uk/homegarden/interiors/kitchen/articles/0,,690255_709884,00.html
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Chippy
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| posted on 13/8/08 at 10:02 PM |
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Do the coins have to be made of metal? Because if not then get some casting resin, some metal powder, and make them from that. Just press the coin
into some plastercine and you have an instant mould. Just a thought. HTH Ray
To make a car go faster, just add lightness. Colin Chapman - OR - fit a bigger engine. Chippy
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wilkingj
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| posted on 14/8/08 at 03:24 PM |
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WOW!!!
What a response.
OK, I have a real coin that I can use as a pattern.
Its fairly intricate.
They have to be made of metal, or the other players in the game will realise its a fake, and probably try to kill me (my Character).
BTW... This is Live Action Role Playing, and its played by about 1000+ people at 4 events per year. Set in the mid 1650's In a new colonial
type setting (read Europe and America of the 1600's) with magical powers, and intelligent animal beings.
Its a LOT of fun if you have a good imagination.
Right back to the coins, I will put one up on this posting when I get home.
I think I could do the colouring with a Copper wash or electroplating, as this particular coin is coppery.
Rules say I can forge them, but cannot get them made by an outside minting service.
Thats so the forgeries, are not as good as the Game companies coins! That would be too easy.
but Like a Locost... doing it youself if half the fun..
Keep it coming... you are giving me ideas..
1. The point of a journey is not to arrive.
2. Never take life seriously. Nobody gets out alive anyway.
Best Regards
Geoff
http://www.v8viento.co.uk
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02GF74
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| posted on 12/8/09 at 11:58 PM |
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..... so what happened?
were these coins ever made, is so, photo?
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NS Dev
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| posted on 13/8/09 at 06:48 AM |
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what metal are the coins you already have made from.
if they were copper, you could use them as spark erosion electrodes, and get two die halves eroded out of P2 tool steel using the existing coin as the
electrode.
Most injection moulding toolmakers will have a die sink spark erosion machine and it won't cost as much as you think to do something small like
that. get the halves hardened and you can make as many coins as you like from blanks cut from sheet copper etc.
Retro RWD is the way forward...........automotive fabrication, car restoration, sheetmetal work, engine conversion
retro car restoration and tuning
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Marcus
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| posted on 13/8/09 at 04:15 PM |
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Could you use copper and then etch them with ferric chloride the way PCBs are made. You can buy etch resist pens for this.
Marcus
Because kits are for girls!!
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GrumpyOne
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| posted on 14/8/09 at 06:42 AM |
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I would use white metal to cast them, with a modelling powder or putty mould.
Everything you need here 
http://www.fredaldous.co.uk/
My wife is very understanding, she understands that if I am in the garage I am not in the house annoying her.
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Benzine
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| posted on 14/8/09 at 09:10 AM |
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LIGHTNING BOLT!
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Ninehigh
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| posted on 15/8/09 at 10:16 AM |
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Did they have printing presses back then? Paper money 
I'd like to know a bit more about this game too
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