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 Replies: 21 / Views: 532 |
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Pillar of the Community
United States
3330 Posts |
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Pillar of the Community
United States
1235 Posts |
Interesting!
I'll need to finish reading it later.
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Pillar of the Community
 United States
8724 Posts |
Nice writeup, Pete. Until two or three years ago, I was not even aware of the CNC technology, someone spoke of it on this site. I would be nice to know for sure where all of this "doubling" comes from now though, I appreciate all of your hard work and all you do trying to make light of it.
-makecents-
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Pillar of the Community
 United States
3330 Posts |
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Bedrock of the Community
United States
19108 Posts |
Interesting write-up, but presenting the information in a 'courtroom setting' is a bit over the top in my opinion.
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Pillar of the Community
United States
3330 Posts |
Quote:
Interesting write-up, but presenting the information in a 'courtroom setting' is a bit over the top in my opinion. A helpful comment. I had fun writing it! |
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Moderator
 United States
94636 Posts |
That is an outstanding write-up Pete!
Excellent work and I'm glad you had fun with it too.
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Pillar of the Community
United States
3330 Posts |
Quote:
That is an outstanding write-up Pete!
Excellent work and I'm glad you had fun with it too. Thank you! |
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Pillar of the Community
United States
6449 Posts |
Excellent research, as usual.
You might just be able to file a FOIA request with a direct question.
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Pillar of the Community
United States
3330 Posts |
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Excellent research, as usual.
You might just be able to file a FOIA request with a direct question. Thank you! The mint used to respond to my questions, but no longer. I don't know if they blocked me as a pest, or if government cutbacks nixed that. FOIA requires $ I am not excited to spend and a time frame I am not anxious to endure, so I have never tried. I have also found them to be most jealous of proprietary information! |
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Pillar of the Community
United States
1791 Posts |
Great article! As someone that once worked with CNCs on a larger scale, all that with the tooling is extremely accurate and the cutting direction matters. a profile can't be cut in one direction and then done again in the opposite direction. They won't match up. There is always some "slop" when reversing directions so all profiling must be done from the same direction.
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Pillar of the Community
United States
3330 Posts |
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Great article! As someone that once worked with CNCs on a larger scale, all that with the tooling is extremely accurate Thank you! I may send you a message with some CNC questions! |
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Pillar of the Community
United States
5765 Posts |
Excellent article and it looks like you had fun writing it. I've wondered for a long time whether computer glitches could have been responsible for all the DDR varieties on the 2015 homestead headquarters. Words of encouragement are one of the major food groups.
We need to consume them regularly to thrive and grow.
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Pillar of the Community
United States
3330 Posts |
Quote:Excellent article and it looks like you had fun writing it. I've wondered for a long time whether computer glitches could have been responsible for all the DDR varieties on the 2015 homestead headquarters. Thank you. The only way I can see for computer involvement would be at the master die level and that would be through CNC Doubling (CNCD), not hub doubling of the master die. If a specific example were on ALL examples, then perhaps. Even most examples, then it could be possible, since there could be more than one master die - but I know of no way (yet) to make such attribution! |
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Pillar of the Community
United States
2731 Posts |
Fun read Pete!
Next week on Law & Order: Special Varieties Unit "The Case of the Missing Master Hub"
Ice-T voice over: "They thought they could hide the evidence in a CNC machine. they were wrong."
"Pride is yoked with callous behavior, as humility is with compassion." St. Gregory Palamas Top Finds - 1969-S 1c FS-101 http://goccf.com/t/477681 1976 D WQ FS-101 http://goccf.com/t/382777 - 1968 D 1c FS-801 http://goccf.com/t/422254Cool clashed dies - 1972 D 1c http://goccf.com/t/429855&SearchTerms=CCLStruck-In Rim Burr - 1969 S 1c http://goccf.com/t/425587&SearchTerms=burrFloating (Type II) Counterclash - 1978 D 1c http://goccf.com/t/434991&SearchTerms=1978 |
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Pillar of the Community
United States
3330 Posts |
The Mint is now moving beyond CNC milled Master Dies to Laser Engraved Master Dies. The 2024 American Liberty silver medals and the 2025 American Liberty gold coins (resurrecting the 1794-dollar designs) are the first to incorporate this technology. The 2025 Laser Engraved American Eagle One Ounce Silver Proof Coin is the first American Eagle Silver Proof Coin (with a laser-engraved privy mark) minted using laser-engraved master dies.
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Replies: 21 / Views: 532 |
Posted 03/27/2026 11:36 am
