knife vs lava

A little off topic, but can you cook a steak on it? On second thought, the over tones of sulfur may make it taste funny.
 
Yes you can cook on lava but it does leave a funny taste in the food. I prefer to make tea while hiking on the lava flow I believe boiling water doesn't absorb as much lava flavor. Check out this video...we make grilled cheese sandwiches using hot lava.
https://youtu.be/0FmXx15RkfE
 
The type of lava in the video is the cooler type roughly around a thousand degrees. of course if I wanted to melt the knife I could just stick the knife in the lava and leave it for a long time. I believe eventually the metal would start to deform and definitely start to lose its temper. I've forged knives before tempering them right before the melting point roughly 1,500 degrees when the yellow color starts to turn white. when metal is melting it is kind of a white color. oh by the way this knife is 1070 high carbon steel.
 
What kind of knife is that? I know you said the knife wasn't hurt, but wouldn't you have some heat treat concerns?

Sent from my SM-N910V using Tapatalk
 
These may be the best first posts ...ever....well played, sir, well played!
 
LOL thank you. It was this video or the "3 coconuts vs bolo" video that I wanted to introduce myself with.
 
davehear said:
The knife was not hurt.
Click to expand...
I seriously doubt basaltic lava at flow temperatures will not screw with blade steel's temper. Flowing basaltic lava will run between ~900F and ~2200F. The hotter it is the more orange and faster it flows.
 
Last edited:
leghog said:
I seriously doubt basaltic lava at flow temperatures will not screw with blade steel's temper. Flowing basaltic lava will run between ~900F and ~2200F. The hotter it is the more orange and faster it flows.
Click to expand...

Bingo.

Powered sharpening can easily reach temps at the edge to cause temper issues.
Think about it like this, if it takes a two hour cycle at 400° x two cycles for tempering to affect the steel, a higher temp would take less time. The higher the temp used, the shorter the time needed to cause damage to the integrity of the HT...

It doesn't take long to cook an edge on a powered sharpening system. I would think even a small amount of time at Much higher temps would be cause for concern.

Enjoy yourself and be safe, but I wouldn't recommend this to others, and I wouldn't try to ever sell that knife...
 
leghog said:
I seriously doubt basaltic lava at flow temperatures will not screw with blade steel's temper. Flowing basaltic lava will run between ~900F and ~2200F. The hotter it is the more orange and faster it flows.
Click to expand...

people can say whatever they want to say but I'm the guy that actually has the knife and after some brutal testing I say the knife was not ruined. Here is video proving it
https://youtu.be/Il6FkMuCai4
 
NJBillK said:
Bingo.

Powered sharpening can easily reach temps at the edge to cause temper issues.
Think about it like this, if it takes a two hour cycle at 400° x two cycles for tempering to affect the steel, a higher temp would take less time. The higher the temp used, the shorter the time needed to cause damage to the integrity of the HT...

It doesn't take long to cook an edge on a powered sharpening system. I would think even a small amount of time at Much higher temps would be cause for concern.

Enjoy yourself and be safe, but I wouldn't recommend this to others, and I wouldn't try to ever sell that knife...
Click to expand...

I did not leave it in lava for that long actually the coating wasn't even burned off......its a $53 knife and after playing with lava I actually think the value of the knife will go up but I will never sell it
 
I watched the video, because I also was concerned the temper may have been ruined by cramming the blade into lava. After watching it tho, I don't believe the knife was held in the lava long enough, even when the lava was left on the blade surface as he held it up, to really affect the temper too badly. Yes, it is true, has been proven true, that heat comes to the apex of an edge quickly without mercy (look up Roman Landes's experiment on this topic)....but honestly....the edge wasn't exposed to the heat long enough to do any real "significant" temper damage. Even if some damage did occur, it looks like to be limited towards the tip (where the lava made contact), and would only be minor....nothing that one sharpening session couldn't remove. Not that I would stick a knife in lava myself...but was fun to watch! NJBillK is right, tho. Even powered sharpening can affect an edge apex. There are a LOT of instances and observations here on the forums where knives bought from companies who use powered sharpening have their edges improved upon with hand sharpening....because the temper (at the very apex of an edge, and some small distance behind it) was overheated with power sharpening.

"its a $53 knife and after playing with lava I actually think the value of the knife will go up" - You're joking, right? I'd NEVER buy the knife after I knew you played in lava with it, even tho I agree that the temper PROBABLY wasn't affected too much.
 
I'll never sell this knife its one of a kind a heirloom with a +5 maybe even a +10 LOL its all in good fun never been done before
 
You must log in or register to reply here.
Back
Top