tag:blogger.com,1999:blog-8964719845369935777.post413421469224517250..comments2024-03-27T21:23:40.339-04:00Comments on Chemjobber: 3D printers can't print nuclear weapons - but they can cause a lot of public confusionChemjobberhttp://www.blogger.com/profile/15932113680515602275noreply@blogger.comBlogger14125tag:blogger.com,1999:blog-8964719845369935777.post-2308676893791764592015-11-09T10:12:45.503-05:002015-11-09T10:12:45.503-05:00This comment has been removed by the author.tonyonhttps://www.blogger.com/profile/08253501266473243514noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-85945106183563363132015-09-11T19:56:54.413-04:002015-09-11T19:56:54.413-04:00I'm not thinking you should. Way too high mai...I'm not thinking you should. Way too high maintenance.Harry Elstonhttps://www.blogger.com/profile/16091371872387480309noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-84455807253498297202015-09-11T19:27:17.859-04:002015-09-11T19:27:17.859-04:00So it's not possible to 3D-print Britney Spear...So it's not possible to 3D-print Britney Spears.qvxbnoreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-728336843049423492015-09-11T16:17:40.733-04:002015-09-11T16:17:40.733-04:00Some printable 3D printers exist. You of course st...Some printable 3D printers exist. You of course still have to buy things like the PCB electronics and motors but most of it is printable:<br />http://reprap.org/mod101noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-67043795843235682102015-09-11T16:13:43.222-04:002015-09-11T16:13:43.222-04:00I meant to link this Seb Spain article in the prev...I meant to link this Seb Spain article in the previous post<br />http://sebspain.co.uk/files/2014/04/21/drugprinter.pdfmod101noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-37579090711753741392015-09-11T16:12:35.009-04:002015-09-11T16:12:35.009-04:00This reminds me of an article I saw here a year or...This reminds me of an article I saw here a year or 2 ago:<br />http://chemjobber.blogspot.ch/2014/04/i-cannot-believe-this-was-published.html<br /><br />The author so flippantly mentions sub-atomic 3D printing its like we already have prototypes of this technology working, but the argument depends on Sub-atomic 3D printing, and scientists getting it to work soon. <br /><br />I also think that even if we had a sub-atomic 3D printer that could print us plutonium and uranium that it would be difficult to ever reach the amount needed for a weapon. Wikipedia suggests you can get away with out 10 kg of plutonium (~40 moles). I think people dont really understand the magnitude of Avogadro's constant when it comes to these situations. In relation to the drugprinter article above Seb Spain wrote a great analysis about the amount of time to hypothetically print a 350 Da molecule. At a rate of 1 molecule per nanosecond it would take about 54 million years to make a kg. So even if sub-atomic printers existed, you have to be making millions of atoms of plutonium per nanosecond in order for it to even be worth trying. Really goes to show why Political Science professors shouldn't be speculating about the future of science.mod101noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-25492953789595930042015-09-11T10:35:20.864-04:002015-09-11T10:35:20.864-04:00I wonder if a 3-D printer could replicate itself b...I wonder if a 3-D printer could replicate itself by printing new 3-D printers.<br /><br />I admit I'm not familiar with the technology of these things, but as you point out, the reports in the mainstream media usually sound wildly implausible.KTnoreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-35071279554181349722015-09-11T09:36:38.358-04:002015-09-11T09:36:38.358-04:00or Rhodium--I keep avoiding Rh-catalyzed reactions...or Rhodium--I keep avoiding Rh-catalyzed reactions because that stuff is too expensive.Barneyhttps://www.blogger.com/profile/10870055736793776057noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-88273291535570701652015-09-11T09:36:09.472-04:002015-09-11T09:36:09.472-04:00This comment has been removed by the author.Barneyhttps://www.blogger.com/profile/10870055736793776057noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-5645107570966108402015-09-11T09:12:56.226-04:002015-09-11T09:12:56.226-04:00Barney is right. If I have control of subatomic pa...Barney is right. If I have control of subatomic particles, why would I 3D print uranium when I could literally be printing gold?<br />Polychemhttps://www.blogger.com/profile/11318163213252728838noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-46985187219924982462015-09-10T16:49:46.044-04:002015-09-10T16:49:46.044-04:00One of the weirder aspects of Majel Barrett's ...One of the weirder aspects of Majel Barrett's tenure on TNG was that, as well as being Luxwana Troi (sp?) and the voice of the computer, she was also the voice of the narration: "And now, for the conclusion". Always broke me out of concentration. Chemjobberhttps://www.blogger.com/profile/15932113680515602275noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-1181885997516484382015-09-10T16:47:20.064-04:002015-09-10T16:47:20.064-04:00Maybe the author is confusing "3D-printer&quo...Maybe the author is confusing "3D-printer" with a Star Trek "Replicator" (R)?<br /><br />"Computer: Uranium-235, 15 kilograms, non-critical geometry"<br /><br />Perhaps we can mix shows too: Combine HAL-3000's actions with Majel Barrett's voice, "I'm sorry Lieutenant, I'm afraid I can't do that."Harry Elstonhttps://www.blogger.com/profile/16091371872387480309noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-50598962256650557732015-09-10T16:37:59.453-04:002015-09-10T16:37:59.453-04:00Man, I gotta get me one of those! Man, I gotta get me one of those! Chemjobberhttps://www.blogger.com/profile/15932113680515602275noreply@blogger.comtag:blogger.com,1999:blog-8964719845369935777.post-24528359787638875752015-09-10T16:32:51.929-04:002015-09-10T16:32:51.929-04:00I bought a 3d printer as a way to connect with non...I bought a 3d printer as a way to connect with non-technical personnel, it's been fantastic. You can show management and potential investors an Orbitrap or a 600MHz NMR and they don't care, it's another beige box you can't see inside of. You show them a 3d printed glow in the dark trinket being made, and their jaws hit the floor over 2 cents of plastic when you put it in their hand. If you turn up the stepper motor voltages, you can get the buzzing and whirring a bit louder. Now that's innovation. One can further up the wow factor by using a 3d printer that looks unnecessarily futuristic, like the one linked in my name. <br /><br />(# of robotic arms) x (# of blue LEDs) x (the phone number of the cute sales girl) = your VC packageanon electrochemisthttp://seemecnc.com/collections/3d-printers/products/rostock-max-complete-kitnoreply@blogger.com