From: clare@snyder.on.ca
On Wed, 27 Nov 2024 16:33:48 -0700, Bob La Londe
wrote:
>On 11/27/2024 4:17 PM, Clare Snyder wrote:
>> On Wed, 27 Nov 2024 15:55:48 -0700, Bob La Londe
>> wrote:
>>
>>> On 11/27/2024 3:29 PM, Joe Gwinn wrote:
>>>> On Wed, 27 Nov 2024 13:57:58 -0700, Bob La Londe
>>>> wrote:
>>>>
>>>>> Every since watching a woman dressed in pirate garb at a renaissance
>>>>> fair (or faire if you prefer) place a blank in a set of dies and drop a
>>>>> heavy weight on it to strike a souvenir coin I have had in the back of
>>>>> my mind the idea to strike my own coins. I can certainly make the dies.
>>>>> 4140 is relatively easy to machine if you know how, and it will harden
>>>>> "hard enough" for a low production number of from a few hundred to a
>>>>> couple thousand coins. I also keep a bit of O1 and W1 on hand for those
>>>>> cutting tools I can't hand grind from HSS or carbide. I even have a
>>>>> propane forge in the back along with a toaster oven for tempering
>>>>> (although it gets used more for powder coating).
>>>>>
>>>>> I started writing with two questions in mind.
>>>>>
>>>>> Where to buy/make coin blanks at the best price? Not the 10-20 on Ebay
>>>>> or Amazon, but a couple hundred to a couple thousand at a more
>>>>> reasonable bulk price.
>>>>
>>>> Many country fair coins were made of soft aluminum.
>>>>
>>>> Maybe the brass sold for stamped dataplates or tags?
>>>>
>>>> .
>>>>
>>>
>>> That's not a bad start. Unfortunately they also sell end product which
>>> usually means they don't sell for real wholesale pricing. Its still a
>>> good idea.
>>>
>>>
>>>> Probably the alloy used for copper pennys can be got.
>>>
>>> Getting actual penny copper is not a horrible idea. I could certainly
>>> do some experiments by going through my change bowl and sorting out the
>>> older real copper pennies to be restamped. I suppose the zinc pennies
>>> stamp okay, but they may not re-stamp okay. My end goal is mostly for a
>>> coin "about" the diameter and thickness of a regular classic silver
>>> dollar.
>>>
>>> Casting copper from old pennies, motors, etc could also be an option,
>>> but that would make it a whole different class of project. A time and
>>> money thing, and I don't mean the pennies. Also, my little propane
>>> forge probably isn't up to melting enough copper to be worth while. Its
>>> fine for one off heat treating projects, but probably not for casting
>>> any quantity.
>>>
>>>
>>>> Hobby stores may have coin-making supplies.
>>>
>>> Hmmmmm... I suppose its worth a look to see if Michael's (are they still
>>> in business) or Hobby Lobby has anything. At the very least I could
>>> read the packaging if they do to see if that generates an other leads.
>>>
>>>> Early Chinese coins were lost-wax cast from bronze.
>>>
>>> I don't think casting is really the way I want to go.
>>>
>>>>
>>>> Joe
>>>
>>>
>>> --
>>> Bob La Londe
>>> CNC Molds N Stuff
>> Do your own "fineblanking" - stamp your blanks from aluminum, copper,
>> or brass flat stock on a punch press.
>
>I design some punch dies years ago. Hadn't even considered it for this.
> Its an option, but a big fancy punch press is probably out of my
>budget. I'll have to calculate the shear and see if it can be done with
>one of my shop presses or perhaps an improvise drop weight press.
>
>
>--
>Bob La Londe
>CNC Molds N Stuff
Shop press will do it. Even a good arbour press. Cycle time is slow
doing onezies ---
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