Knife made from sapphire

[FullMetalJackass]

Obsidian scalpels are commonly used in microsurgery today. They can take an edge that is sharper than is possible with steel. However, for general use, steel is a lot more forgiving due to its toughness.

The banana knife is a "green" product, when you finish using it, you can eat it. The peel, on the other hand is a dangerous weapon, used as a pressure-activated friction reducer, can lead to injuries and possibly even derisive laughter. Peels need to be properly composted under adult supervision.

Hilarious!

 

[Czechmate]

Old

Cool knives though. :thumbup:

 

[leghog]

Concoidal fractures in sapphire means you'd probably be better off making a sapphire knife as prehistoric man did with obsidian.

 

[Natlek]

Would laminating it with CF help the toughness?

I'm working on something similar .CF knive and only edge from steel .So far two failures , but I think I find right way to do that

 

[Gavin S.]

I made one out of a banana but I eated it.

I'll stick with my metal knives.
(no, that is not my photo or banana)

I couldn't help but picture Ralph Wiggum when I read that. I loled.

 

[colubrid]

I rmemeber I used to have a few spydercos approved for airline travel called C0-pilots. I guess they would have to rename them now.

 

[marcinek]

Old

Cool knives though. :thumbup:

A thread is never too old to not use it to try to get some free advertising for your products!

 

[mete]

Remember that if you take your banana folder to Europe ,it can't have a locking blade !!
No one has brought up the subject of graphene for a blade -it's only one atom thick !!

 

[Natlek]

Remember that if you take your banana folder to Europe ,it can't have a locking blade !!
No one has brought up the subject of graphene for a blade -it's only one atom thick !!

It is early, too expensive for now But I remember the same thing happened to carbon nanotubes , they cost more then a pure gold once. Today , even I have them in the drawer . Anyway it is cool idea to have one atom thick edge , better then laser I guess

 

[jstrange]

A thread is never too old to not use it to try to get some free advertising for your products!

Agreed, but they are pretty cool looking and I would be interested to learn more.

 

[marcinek]

Agreed, but they are pretty cool looking and I would be interested to learn more.

Well, I guess we can hope he gets the proper membership level to promote his knives.

 

[jstrange]

^
Agree on that as well

 

[Vicarious Reality]

Neat .

 

[19-3ben]

I made one out of a banana but I eated it.

I'll stick with my metal knives.
(no, that is not my photo or banana)

Was this a vague prophecy of the Banana Tanto, seven years prior to Jamie_Lion's thread?

Perhaps 2brothers has the gift of foresight.

 

[Locutus D'Borg]

I only use gluten-free, non-GMO knives.

 

[W. Anderson]

I only use gluten-free, non-GMO knives.

You fool, GMO knives are no different than organic, other than cost, and any knife with a gluten allergy is just making it up.

 

[katanas]

"NOT very interesting", and stupid.

 

[ursamajor]

I've often wondered about knife technology which departs from convention in a major way (and yields some advantage over mainstream cutting implements) -- such as ceramic knives. Here, apparently, is evidence of knives made from synthetic sapphire. This is the only link I could find, with pictures and an unsettling blurb about them passing through security: Artificial sapphire knife.
Yes, from the pictures the knife looks like a high-end prison weapon but all that aside it seems plausible. Sapphire is extremely hard (though I've no idea how to begin comparing its hardness to steel,) and sharp enough to be used in microscopic sectioning. One wonders how functional it actually might be as a blade material. I imagine a knife from it could be made incredibly sharp--possibly sharp enough to slice through the space-time continuum--but it has to be somewhat brittle which might invalidate the whole purpose.

Feel free to dismiss this as hoax or ridiculous novelty.

For scalpels, I’m sure that a real world use for them could be found on the surgery table. Steel cannot come come close to Sapphire or obsidian in terms of extreme sharpness.