Comments on: Knife Constructed from Sapphire http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/ The Neat Side of the Web Tue, 24 Nov 2009 07:31:29 -0600 http://wordpress.org/?v=2.8.6 hourly 1 By: Phil http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-128857 Phil Mon, 18 Jun 2007 14:00:47 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-128857 I have recently designed two small folding ceramic pocket knives and specified stainless steel for the handles. The ONLY reason for requiring stainless steel was to permit detection by airport magnetron detectors. Knives that can not be detected either are or soon will be banned from sale in the USA. www.ceramicknife.org I have recently designed two small folding ceramic pocket knives and specified stainless steel for the handles.

The ONLY reason for requiring stainless steel was to permit detection by airport magnetron detectors.

Knives that can not be detected either are or soon will be banned from sale in the USA.

http://www.ceramicknife.org

]]> By: Random Idiot http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-69124 Random Idiot Tue, 23 Jan 2007 05:17:00 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-69124 Hey Jason! BoingBoing has a post today about Fedex testing a missile defense system on its planes: http://www.boingboing.net/2007/01/22/fedex_cargo_plane_li.html I may be an idiot, but even a broken clock is right twice a day. Hey Jason! BoingBoing has a post today about Fedex testing a missile defense system on its planes:

http://www.boingboing.net/2007/01/22/fedex_cargo_plane_li.html

I may be an idiot, but even a broken clock is right twice a day.

]]> By: Nathan B. http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68944 Nathan B. Mon, 22 Jan 2007 16:35:36 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68944 Carl, that's the first thing I thought of too (Raven). Carl, that's the first thing I thought of too (Raven).

]]> By: Pro Gunner http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68479 Pro Gunner Sat, 20 Jan 2007 23:27:56 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68479 By the way I think the corundum blade is pretty cool. By the way I think the corundum blade is pretty cool.

]]> By: Pro Gunner http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68478 Pro Gunner Sat, 20 Jan 2007 23:27:18 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68478 Liberal Avenger, A knife is never "too sharp to be used casually" depending on what you mean by casually. If you mean playing with it, fine. But if you mean for everyday use it is well known that the sharper the knife, the safer it is to use because it will do its job properly and easily without any effort which may result in cutting oneself. Liberal Avenger, A knife is never "too sharp to be used casually" depending on what you mean by casually. If you mean playing with it, fine. But if you mean for everyday use it is well known that the sharper the knife, the safer it is to use because it will do its job properly and easily without any effort which may result in cutting oneself.

]]> By: Bob Basset http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68469 Bob Basset Sat, 20 Jan 2007 22:20:34 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68469 It is my new work. Thank you. I am glad, that you have once again shown that at me my work. http://bob-basset.livejournal.com/53082.html It is my new work. Thank you.

I am glad, that you have once again shown that at me my work.

http://bob-basset.livejournal.com/53082.html

]]> By: Carl http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68238 Carl Sat, 20 Jan 2007 03:00:46 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68238 No actually he's got a point. It's completely reasonable. I mean, one of the takeoff runways for the Buffalo airport crosses over the throughway. You wouldn't have to get anywhere near the airport itself. No actually he's got a point. It's completely reasonable. I mean, one of the takeoff runways for the Buffalo airport crosses over the throughway. You wouldn't have to get anywhere near the airport itself.

]]> By: Jason http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68181 Jason Fri, 19 Jan 2007 21:59:08 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68181 You have named yourself well. I've never seen somebody wear the "idiot" label so proudly. You have named yourself well. I've never seen somebody wear the "idiot" label so proudly.

]]> By: Random Idiot http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68153 Random Idiot Fri, 19 Jan 2007 18:57:41 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68153 They've been selling extremely cheap, very sharp knives made entirely out of high-impact plastic at gun shows for years and years. It's ALWAYS been possible to bring a weapon on an airplane. Think about it: you're afraid to try it once because you don't want to get in trouble. "They" are willing to die, and there's thousands of "them". They're more than happy to spend a year in prison for trying to bring a weapon onto an airplane. The security measures taken at airports are complete bullshit. Please don't take them seriously. If a serious enemy felt like knocking down our airplanes, they could use any one of a ba-jillion shoulder-fired device (bought at some Somali flea market or something) and take down an airliner every day from now on if they wanted to. There is nothing stopping them. Why aren't they doing it, then? Please take some time to think that over. They've been selling extremely cheap, very sharp knives made entirely out of high-impact plastic at gun shows for years and years. It's ALWAYS been possible to bring a weapon on an airplane.

Think about it: you're afraid to try it once because you don't want to get in trouble. "They" are willing to die, and there's thousands of "them". They're more than happy to spend a year in prison for trying to bring a weapon onto an airplane.

The security measures taken at airports are complete bullshit. Please don't take them seriously. If a serious enemy felt like knocking down our airplanes, they could use any one of a ba-jillion shoulder-fired device (bought at some Somali flea market or something) and take down an airliner every day from now on if they wanted to. There is nothing stopping them.

Why aren't they doing it, then? Please take some time to think that over.

]]> By: Denita TwoDragons http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68128 Denita TwoDragons Fri, 19 Jan 2007 16:21:41 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68128 Are you sure that isn't made from a worm's tooth...? ;-) http://en.wikipedia.org/wiki/Crysknife --TwoDragons Are you sure that isn't made from a worm's tooth...? ;-)

http://en.wikipedia.org/wiki/Crysknife

--TwoDragons

]]> By: Skapi http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-68105 Skapi Fri, 19 Jan 2007 13:19:47 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-68105 The blade material is properly called corundum. Depending on additives, transparent corundum can be blue (sapphire) or red (ruby). The blade material is properly called corundum. Depending on additives, transparent corundum can be blue (sapphire) or red (ruby).

]]> By: dwight http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67979 dwight Fri, 19 Jan 2007 05:05:42 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67979 Reminds me of Sten series (http://www.acole.com/novels/sten/sten_samples/sten_one.html, http://www.amazon.com/Sten-Chris-Bunch/dp/1841490075/ref=rcx_ser_img/103-7910284-4620603?ie=UTF8&s=books) where the title character builds a crystal knife that he secrets in a "pocket" inside his forearm. Reminds me of Sten series (http://www.acole.com/novels/sten/sten_samples/sten_one.html, http://www.amazon.com/Sten-Chris-Bunch/dp/1841490075/ref=rcx_ser_img/1 03-7910284-4620603?ie=UTF8&s=books) where the title character builds a crystal knife that he secrets in a "pocket" inside his forearm.

]]> By: The Liberal Avenger http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67962 The Liberal Avenger Fri, 19 Jan 2007 04:06:24 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67962 I have a ceramic pocket/folding knife and it is the sharpest blade I have ever experienced. It is almost too sharp to use casually. The most remarkable thing about it is that it is extremely light. It is also an off color - not silver like a metal blade or clear like this sapphire knife but sort of a dark brown - it reminds me of the color of a video or cassette tape. Here is a nice one on eBay: http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190073819522 I have a ceramic pocket/folding knife and it is the sharpest blade I have ever experienced. It is almost too sharp to use casually. The most remarkable thing about it is that it is extremely light. It is also an off color - not silver like a metal blade or clear like this sapphire knife but sort of a dark brown - it reminds me of the color of a video or cassette tape.

Here is a nice one on eBay:

http://cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=190073819522

]]> By: The Liberal Avenger http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67959 The Liberal Avenger Fri, 19 Jan 2007 04:03:01 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67959 Link: http://englishrussia.com/?p=590 Link: http://englishrussia.com/?p=590

]]> By: Anita http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67957 Anita Fri, 19 Jan 2007 04:00:14 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67957 Sorry about the link - it's fixed. My understanding about ceramics is that they have a lower density and "hardness" than gemstones, which is why sapphires and diamonds are used for precision cutting devices and ceramics are not. I agree that ceramics are cheaper though, which certainly doesn't make me feel any less nervous about a potential strip search next time I travel. ;) Sorry about the link - it's fixed.

My understanding about ceramics is that they have a lower density and "hardness" than gemstones, which is why sapphires and diamonds are used for precision cutting devices and ceramics are not.

I agree that ceramics are cheaper though, which certainly doesn't make me feel any less nervous about a potential strip search next time I travel. ;)

]]> By: The Liberal Avenger http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67951 The Liberal Avenger Fri, 19 Jan 2007 03:51:27 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67951 1. Link bad 2. Ceramic knives are sharper, less brittle and less expensive 1. Link bad
2. Ceramic knives are sharper, less brittle and less expensive

]]> By: Carl http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67947 Carl Fri, 19 Jan 2007 03:47:52 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67947 Reminds me of the knife Raven carries ("glass") in the book Snow Crash. Reminds me of the knife Raven carries ("glass") in the book Snow Crash.

]]> By: scrivy http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67942 scrivy Fri, 19 Jan 2007 03:40:16 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67942 I can't find any reference to a knife of that size. All of the saphire knives available are either high precision medical or used for thin slicing for electron microscopy. I think that the info about saphire knives under this knife, which xould well be glass or plexi glass is misleading. I can't find any reference to a knife of that size. All of the saphire knives available are either high precision medical or used for thin slicing for electron microscopy. I think that the info about saphire knives under this knife, which xould well be glass or plexi glass is misleading.

]]> By: donna http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67937 donna Fri, 19 Jan 2007 03:16:30 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67937 Cermaic knifes are easier to obtain and just as sharp.... Cermaic knifes are easier to obtain and just as sharp....

]]> By: dj_nme http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/comment-page-1/#comment-67936 dj_nme Fri, 19 Jan 2007 03:13:33 +0000 http://www.neatorama.com/2007/01/18/knife-constructed-from-sapphire/#comment-67936 The link at the bottom sends you back to the Neatorama homepage. Is there actualy a link to a website that has more information on this unusual knife? The link at the bottom sends you back to the Neatorama homepage.
Is there actualy a link to a website that has more information on this unusual knife?

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