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Why Has Noone Thought Of This

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 Posted 11/28/2022  4:43 pm Show Profile   Bookmark this topic Add KerryKz to your friends list Get a Link to this Message
Okay. Hear me out. Pictures are flat. Often crappy missed depth and hands on which is pretty much the only way I learn things. 3d prints of actual coin errors. Doubke dies. Strike throughs. Rpm. Sell as a learning guide. ANA example or two of most common type errors.. I should trademark this before posting
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 Posted 11/28/2022  5:00 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
What are you talking about?
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 Posted 11/28/2022  5:05 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
So, you're saying a way to view coin images in stereo--aka 3 dimensions? A stereo camera would work.

Better yet, scan the coin at a very high resolution using Lidar methods/technology. Then, the image could be manipulated (positioned and viewed) in any number of ways. Alas, Lidar scanning is not cheap.

Lidar -- https://en.wikipedia.org/wiki/Lidar
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 Posted 11/28/2022  5:11 pm  Show Profile   Bookmark this reply Add T-BOP to your friends list Get a Link to this Reply
ijn1944 , how the heck did you come across that from OP's post ?
Tony

For Butch & Jim rest in peace .
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 Posted 11/28/2022  5:23 pm  Show Profile   Bookmark this reply Add Hondo Boguss to your friends list Get a Link to this Reply
Kerry, the problem is that phones and computer monitors all use 2D display. How do you propose overcoming this limitation?
Inordinately fascinated by bits of metal with strange markings and figures
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 Posted 11/28/2022  5:30 pm  Show Profile   Bookmark this reply Add Notatzaddik to your friends list Get a Link to this Reply
I hope you are not talking about using a 3d printer to make a replica, that would be illegal unless the coin was marked as such.
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 Posted 11/28/2022  5:33 pm  Show Profile   Bookmark this reply Add loonielewy to your friends list Get a Link to this Reply
I think he is talking about 3D printing scanned error coins. Are 3D printers that accurate yet?
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 Posted 11/28/2022  5:36 pm  Show Profile   Bookmark this reply Add KerryKz to your friends list Get a Link to this Reply
Yes I'm talking about replicas. They could be marked. Lime green whatever. And sold as singles or sets. Learning disabilities etc.. hands on learning tool
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 Posted 11/28/2022  5:38 pm  Show Profile   Bookmark this reply Add KerryKz to your friends list Get a Link to this Reply
Specifically error replicas so think of how many less times you would have to comment md or damage on posts
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 Posted 11/28/2022  5:50 pm  Show Profile   Bookmark this reply Add jimbucks to your friends list Get a Link to this Reply
If he is referring to 3D printing, I doubt he understands the technology.
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 Posted 11/28/2022  6:22 pm  Show Profile   Bookmark this reply Add NumismaticsFTW to your friends list Get a Link to this Reply
I always enjoy your posts, keep 'em coming
Edited by NumismaticsFTW
11/28/2022 6:48 pm
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 Posted 11/28/2022  6:38 pm  Show Profile   Bookmark this reply Add Sap to your friends list Get a Link to this Reply
I don't think 3-D printers can work in metal at coin-sized scale yet. When they can, I think it would be the death-knell for coin collecting due to the influx of easy counterfeits. You'd need to make the models super-sized to retain the fine details, which might be great for some in-person demonstrations like at a seminar or coin club meeting, but kind of inconvenient for personal use.

If you're wanting to make 1:1 sized replicas of coins, there are cheaper and easier methods than 3-D printing. Old-fashioned pressure casting, for example, would work well enough for the purpose. You'd lose a little detail, but not as much as a 3-D printer.

There's the whole "counterfeit coins" angle to consider. To sell them legally, they would need to be stamped "COPY" to comply with the Hobby Protection Act. You couldn't sell them on eBay due to eBay's blanket ban on copies and replicas. Plus, of course, the forum would be flooded for years to come by people who found grampa's set of replica error coins and thought they were real (no matter how carefully they were marked otherwise).

Finally, you're kind of missing the point on why so many of these people are coming onto the forum lately with their non-error coins. Many of them are get-rich-quick free-money-for-nothing kinds of folks, who see on the news or YouTube or wherever somebody making a fortune selling error coins, and they want a piece of the action. These people are not interested in "learning tools" and certainly aren't going to be wanting to buy sets of replica errors, to improve their error collecting - they're trying to find a way to make free money, without having to work hard, think hard or spend money first.
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 Posted 11/28/2022  6:59 pm  Show Profile   Bookmark this reply Add Coinfrog to your friends list Get a Link to this Reply
Good stuff, thanks. Kinda scary.
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 Posted 11/28/2022  8:16 pm  Show Profile   Check CarrsCoins's eBay Listings Bookmark this reply Add CarrsCoins to your friends list Get a Link to this Reply
before coin photography became viable at home people would make foil pressing of their coins to share with other collectors. here are some pressings that I have in my collection.



the gallery mint used to offer seminars on error coins. they would show you how they were made and let you make some yourself. here are some error tokens from their 2002 class at the ANA summer seminar. I made some of them myself

I collect low grade large cents. I currently have >230 Sheldon varieties and >235 middle date Newcomb varieties.
Edited by CarrsCoins
11/28/2022 8:24 pm
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 Posted 11/28/2022  8:32 pm  Show Profile   Bookmark this reply Add jimbucks to your friends list Get a Link to this Reply

Quote:
I don't think 3-D printers can work in metal at coin-sized scale yet
Yes they can. What most people don't understand is that a 3-D printer needs a CAD model to print from. A high fidelity CAD model requires a significant effort. You don't just take a picture and make a 3-D model.
Edited by jimbucks
11/28/2022 8:33 pm
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 Posted 11/28/2022  9:17 pm  Show Profile   Bookmark this reply Add ijn1944 to your friends list Get a Link to this Reply
Agree with jimbucks. Gotta build that CAD model--not a trivial endeavor.
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