READ THIS! The Next Generation Of Chinese Counterfeits Have Arrived

Discussion in 'US Coins Forum' started by LostDutchman, Apr 25, 2015.

  1. davidh

    davidh soloist gnomic

    I don't think there's anything new to be learned in this thread. I vote for putting it to rest.
     
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  3. 19Lyds

    19Lyds Member of the United States of Confusion

    Meaning Luster.
    How could you say this since the ringing has to do with the forging and molecular alignment of the silver molecules within the metal of the coin due to the forging (i.e. minting)

    What you are suggesting is that a 3-D Printer will be able to print a magnet on the molecular level.
     
  4. 19Lyds

    19Lyds Member of the United States of Confusion

    Post #261
     
  5. john59

    john59 Well-Known Member

    It's here already. Have you taken a look at some of the things they make with those 3D printers?
     
  6. -jeffB

    -jeffB Greshams LEO Supporter

    The set of things you can make via 3D printing is large, and getting larger every day.

    The set of things you can't make via 3D printing is still immeasurably larger, and again, is likely to stay that way during our lifetimes.
     
    Paul M. likes this.
  7. john59

    john59 Well-Known Member

    You are wrong on that yes they are doing very large things and very small I don't see a coin a problem
     
  8. rzage

    rzage What Goes Around Comes Around .

    Are you saying they can "print" a coin in the right alloy of silver ?
     
  9. john59

    john59 Well-Known Member

    They print in metal don't know if silver is one of them . Metal powder in a layer-by-layer process to build the physical part
     
  10. -jeffB

    -jeffB Greshams LEO Supporter

    I don't want to get into a technical-knowledge-length contest, but no, I'm not wrong. I'm sure you see the same breathless press releases about the latest 3D-printing "breakthroughs" as I see, but please understand that press releases always emphasize the good parts and gloss over the problems.

    Laser-sintered additive printing does let you 3D-print metal. Its products look worse than castings, until you polish them. Now, if your goal is to replicate polished coins, perhaps we're a bit closer...
     
    Paul M. likes this.
  11. john59

    john59 Well-Known Member

    Yes you are wrong they can print coins even you said they can how good but still can print then
     
  12. john59

    john59 Well-Known Member

    My goal is not to make fakes
     
  13. dcarr

    dcarr Mint-Master

    When a coin is struck, the metal is stressed and stretched in a certain way. The result is a distinctive ring sound that the struck coin will have when balanced and tapped. 3-D printing can replicate the basic geometry of a coin, but it can NOT replicate the internal metal stresses (or surface luster) of a struck coin.
     
    aronsamma and Paul M. like this.
  14. dcarr

    dcarr Mint-Master

    Laser etching can be used to engrave dies, but it is not optimal for designs that have subtle changes in relief height. It also leaves a slightly rough texture on the die face which must be polished and/or sanded out. And that will leave tell-tale signs. The coin shown appears to me to have been struck from dies that were manufactured in one of the traditional counterfeiting methods such as making a wax mold from a genuine coin and then using a "lost wax" technique to cast a false die. The question is how was the date changed. It is possible that the original model coin had the last digit effaced prior to making the mold, and then a "1" was engraved into the blank space on the die.

    What I notice on this coin is the rounded-off details in the wreath, which is a typical artifact of transfer dies (as in every subsequent generation of a photocopy is degraded in quality).
     
    Numismat likes this.
  15. dcarr

    dcarr Mint-Master

    Like I said before, a 3-D printed coin will appear less like a genuine coin than a traditional counterfeit. A "printed" metal coin will be naturally porous and it will not have the appearance or surface texture of a genuine die-struck coin.
     
  16. dcarr

    dcarr Mint-Master

    We have not recently heard from the Original Poster. I'd like to read their reply to some of the questions raised here recently.
     
  17. john59

    john59 Well-Known Member

    The question is if a 3d printer can print a coin yes the quality is the question . We all can reason that die-struck is the best looking so far
    The OP is silent like always no return to my PM as asked to send him lets see

    As I see any coin can be reproduced as it was made original if you have the skill and the technology to do it
     
    Last edited: Jun 2, 2015
  18. davidh

    davidh soloist gnomic

    The OP's comments were about a specific, possibly fake, coin. All the comments lately are about 3-D printing, which has nothing at all to do with the original post so why should he comment? This 3-D stuff should have been in its own thread.
     
  19. john59

    john59 Well-Known Member

    The OP won't comment on the original post at all we all have ask told PM not a word
    As for the other comments passing time waiting for the OP to speak about the fake of the century?
    And trying to see how the fake could have been made from the photo if it's fake

    PS: Careful what you say the Chinese are spying on us
     
    Last edited: Jun 2, 2015
  20. davidh

    davidh soloist gnomic

    All the more reason to drop the subject and move on to another topic/thread.
    So pass time by starting a new thread with a new subject. About 3-D printing if you wish.
     
  21. john59

    john59 Well-Known Member

    Cant it's the fake of the century we need the info bad.
    I really don't care about the 3-D printing at least for coins and last but not least

    PS: Careful what you say the Chinese are spying on us
     
    Last edited: Jun 2, 2015
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