Ahhh I see. Yes counterfeit is huge problem in China. Thank you I see Barber/Bust half very bad idea. I am not interested in something like that. I would like to make all adult collectors happy with 1 oz silver commemorative of nude women. The ones I find online are interesting, but not best artist. I want extra fine detail. Standing liberty beautiful nude women commemorative coin is excellent idea. I need lots of feedback on what you would buy. I don't want women to be a prostitute. I want beautiful nude art on coin for all to enjoy. For less detail coin I want to create 1 oz silver coin of World War 2 fighter plane, or painting logos on fighter plane. Please I see trouble in copying U.S. coins. I am not going to follow these ideas. Thank you for website with printing press. I will have to do more searching on this. Right now I am in Denmark. Have a great day.
"Ken Potter sells a large variety of "Nudie"-themed silver rounds as well as brothel coins." I have seen these coins. Interesting, but low quality. I want to create the all natural silver eagle.
My warning regarding the rules of this forum apply to everybody ! So enough with the innuendo and risque comments.
There have been a number of people calling troll. I don't know. regardless welcome to the community Wok to Huang. you look very similar to the fellow in this article. Any relation? I see you both work/worked for the same company. edited - true or not, we don't need that kind of stuff here
You are better of issuing coins that appeal to libertarian community which more or less helped sell out the various ron paul coins than this risque coin work you are planning. Most of the people who collect coin beauties only purchase from mint issues not from private issuers.
I imagine it operates much like a break. It's a simple hydraulic press. I mean just how hard can it be ? Control the automatic feed, the stamping, etc. Also, I bet the manufacturer has the operating and service manuals available, maybe even on-line. I don't think you need to be a member of Mensa to stamp out a few tokens or coins. People have been doing it for centuries. And I think we are looking at a limited production run. That simplifies things a lot. Just sayin'
To see how complicated and intricate a coin press truly is, I suggest you look at this. And this one is over 25 years old. http://www.moonlightmint.com/artifacts.htm
A GREAT Post!! Thanks for the enlightening link, as it appears that many have little understanding of the practical coinage and equipment development process. I believe one will find that a static hydraulic press capable of producing the ~300+ ton force imparted in normal coinage production would require an ~9 inch diameter cylinder when using an operating pressure of 10,000 pounds per square inch. The general operation would be relatively dangerous, slow, horsepower intensive, generating significant amounts of heat in power transmission. Complicated voluminous expensive power accumulators can optimize the utilization of the hydraulic operation. Those having used a large hydraulic press (e.g. 4 inch cylinder operated at 1500 P.S.I.), maybe splitting Elm, might realize the relative requirements of a press requiring ~35 times that power. It will probably be determined that the modern equipment was initially of European design/manufacture, as was partially documented in your referenced link. The process, relatively, is a low horsepower input, high kinetic energy stored mechanical impact operation. This operation allows considerably great number of cycles per unit time when using proper tooling components, lubrication, and pro-active maintenance. I believe the article properly defines the relative complexities in just remobilizing an existing piece of equipment. The subsequent post of the relatively more primitive mechanical process requiring specialized tooling/coin-materials, a hearth/foundry with energy source, and an agile assistant, might produce coins of the caliber shown when simplicity/economics dictate coinage technology. :thumb:
The old fashion pressing was fascinating. Has anyone ever taken a trip to a U.S. mint? I live about 4 hours south of Philly and would love to go one day.
Never been there, but have seen videos of the presses in action. But even in person you can't really see that much as you are quite a ways away and looking through a window. Visitors are not allowed on the mint floor. That said, there are many different types of coin presses with varying degrees of technology. Everything from hammer dies as linked to already, to screw presses that many people still own and operate, to the more intricate presses like the one I linked to. About the only method I'm aware of that nobody uses anymore are the roller presses that used roller dies like this from the 1600's.
I would definitely be interested in the WWII fighter planes, I would like a B-17, Zero and P-51 mustang Please! I also like the idea of an honest person who doesn't want to get into counterfeiting I would have practically no interest in the risque art (16 yrs) And am a WWII history buff. I would like to see some of your designs and I would like to see this work out for you given you keep your word The best idea so far is the older presses because thhey are often costing less and get good results. ~Cannyn
Off topic but fyi Perth mint has a some WW-II fighter aircraft silver coins. The set is sold out and sells for around $400. Pics from perth mint: