View Full Version : Gold knife?

03-12-2013, 06:47 AM
Is it possible to make a knife of gold that is sharp enough to cut, or would it have to be alloyed with another metal? Thanks! I've been puzzling over this for the last 20 minutes, and google isn't helping.

03-12-2013, 07:08 AM
I'm no expert in metals, but 24K would be way too soft. You would probably need to alloy it down to 10K. A solid gold knife would be ceremonial.


03-12-2013, 07:13 AM
You can make a knife out of lead and still cut someone, in a way.

Gold is really soft, so its not going to last long. Maybe one good slash, but through bone is not going to happen.

You can mix it with copper to make it stronger though. But then, copper is soft too.

If you want some decorative blade, have it be steel and then adorn it with jewels and shit. Pimp it out.

03-12-2013, 07:20 AM
Gold is way too soft to make a useful cutting utensil. Gold was almost certainly the first metal ever discovered by human beings, because it is chemically inert and can be found as large nuggets in its native state. Even the earliest people to have found gold used it only for adornment and decoration. It wasn't until bronze (as a natural amalgam of copper and tin) was discovered did people make edged tools and weapons out of metals. That technology disappeared when iron-smelting and the making of steel, far better for weapons, became known.


03-12-2013, 07:57 AM
It's not meant to be decorative, nor used for any practical purposes. It just needs to draw blood. No cutting through bone. What about gold-plated?

03-12-2013, 01:56 PM
Gold can work for the purposes you need, Op. Skin is pretty fragile stuff. (If paper can cut it, so can carefully sharpened gold.) Just don't have the character turning around and getting into fights with it. Gold won't hold it's shape well. It's hard enough to withstand the pressure of someone biting down on it, like you see in westerns. (If the coin is cut with pewter or tin, it's softer.) It's just not strong enough to stand up to metal-on-metal/stone/bone contact when swung.

If you need it to stand up a little harder, and you are operating in some fantasy land, look into "Orichalcum" (http://en.wikipedia.org/wiki/Orichalcum). That's usually used as a short hand for "Magic gold".

03-12-2013, 02:17 PM
Gold is pretty soft, so it would depend what you wanted to cut with it.

It's certainly possible to get a sharp enough edge to cut skin if that's what you needed it for. But you'd have a hard time cutting anything tough with it.

King Neptune
03-12-2013, 04:08 PM
Even a pure gold knife could draw blood, if used properly. A knife made of a gold alloy could be reasonably effective. It depends on what it will look like and how well it has to work. Then there are the alloys that are the color of gold but quite hard.

03-12-2013, 04:50 PM
You could make a wickedly sharp knife with gold if all you want to do is draw some blood. It can be shaped extremely thin and would be razor sharp. Not so durable though. Gold plated would work fine esp. since the edge would probably be steel.

03-12-2013, 07:22 PM
You guys are awesome! Thanks so much! It doesn't need to be durable; it's only used to cut people who are drugged into paralysis. And not enough to kill them.

Reps all around! :D

03-12-2013, 09:54 PM
The best weapon you can make from gold is a hammer or a mace. It would be wiser to make it out of lead but if gold must be used. . .

03-13-2013, 12:18 AM
Is it possible to make a knife of gold that is sharp enough to cut...
Nope. Best that ever was used was gold plating. Gold is too malleable to sharpen.


03-13-2013, 12:48 AM
Pure gold is soft enough you can shape it with your bare hands. Too soft to hold an edge or cut with. To make a minimally usable knife you need to mix the gold with something else to harden it (14 karat ok, 10 karat better) or make the knife out of something else and plate it with gold.