Man Makes miniature knife from a steel bolt

You Tube ^ | 6/3/18 | Bobby Duke Arts

[Buttons12]

Found this video on youtube, just had to share. Unbelievable skill. The guy turns a plain bolt into a miniature knife.

[Buttons12]

Me, I can't even sew a straight seam.

[Buttons12]

https://www.youtube.com/watch?v=X1PQs0Yxauo

Not a genius at posting threads either :o)

[Drew68]

That was really cool. I love these types of videos.

[Drew68]

Not a genius at posting threads either :o)

I clicked on it just fine in the original post.

[SkyDancer]

Just mentioned that to my grandad and he said “piffle - we were making knives in metal shop in HS out of files”

[1_Inch_Group]

Nice...there’s a dude in Japan I think with lots of videos making kitchen knives out of like folded aluminum foil and whatnot. Really interesting.

[BBell]

making machetes from lawn mower blades

[exDemMom]

Sewing is trivial compared to what that guy did.

I’d love to have some tiny but functional knives like that one.

[MtnClimber]

Anza knife company makes knives from files. The files are too hard and brittle for a good knife blade so they need to be annealed some by heating to a moderate temperature for a time and then slowly cooling. The steel becomes less hard, but is also less brittle. Then comes the grinding, polishing and mounting of handle.

[Deaf Smith]

Making knives out of files is what we did in Jr High, our grades came from the chisel we had to make from bar stock.

[yarddog]

Daddy told me that during WWII, actually just after the war, he was part of the Army of Occupation.

He saw a tiny pistol which he said fired cartridges about the size of a match head. It was an automatic and actually worked.

[mylife]

That’s not a knife... This is a knife..

https://en.wikipedia.org/wiki/Kukri

[PLMerite]

I always figured that's what my Orc sword started out as:

[mylife]

I grew up as a metal worker/Welder.

Watching “forged in fire” the other night my buddy asked did you ever make anything like that?

I did not say a word, sipped my beer, shrugged and thought of guns made in shop class

[mylife]

Do yourself a favor and get a Foredom

http://www.foredom.net/

[MtnClimber]

Was the chisel steel treated to be very hard, by heating to red hot and then dropping into a bucket of oil or water? Or was it tempered by heating to a lower temperature for a while and then cooled slowly?

[SkyDancer]

Chatted more with gramps and he said yeah, guns.

[SkyDancer]

Same thing he did/they did in class but then reheated and placed in cow hide shavings to cool.

[mylife]

https://www.amazon.com/Foxfire-Ironmaking-Blacksmithing-Flintlock-Paperback/dp/0385143087

[MtnClimber]

The red hot and quick cooling forms very small crystal structure in steel. Small structure is hard, but brittle. Long crystals from slow cooling bends easily and is soft. The ideal knife blade is in the middle, moderately hard, but not too brittle.

The heating to below red hot and then slow cooling is called the tempering process and lets some of the crystalline structure grow so it is less brittle. The Case brand knives have a logo Case XX. The old Case knife blades were tempered twice. Each tempering was recorded by scratching an X on a part of the blade that would not be seen.