Photos! Post your CPK photos here!

[heat_treat]

When I was around 10 years old I got a Case model 216-5 fixed blade because it was cheaper than the Buck model it copied. The Buck logo is/was the hammer hitting the knife cutting a nail. After having the Case a couple of years I decided to see if the Case could do the thing portrayed in the logo. On the first hit the blade nicely broke into two pieces thus ending my experiment rather abruptly.

I lost all interest in cutting nails with a knife rather early in my life.

 

[trevitrace]

Too hot for hunting do I decided to replace some rotted cedar fenceposts. The FK made short work of the overgrown grape vines on the crossbeams.

 

[Chris A]

Carrying my EDC with Buy Brown kydex

 

[ExtraBaconPlease]

 

[Hard Knocks]

Yep. That happened.

 

[MikeKu825]

Yeah.. interesting sale on a few levels. I coulda loved her better..

 

[Nathan the Machinist]

Would be a great shame to actually break that little fella beyond the point that Nathan could no longer repair it.

What is the actual and historical purpose of using a knife to cut nails? Does it come from the phrase, "tougher than nails"?

Not much purpose I can think of other than to demonstrate durability. I do it as a part of an edge stability/durability test in HT development and started adding it to my videos to prove that the tweaks to the heat treat we make to enhance edge stability and edge retention hasn't made the 3V fragile.

It does show you something. It isn't just a parlor trick, it is legitimately informative and repeatable when applied to carefully controlled geometry.

I use my own 3" EDC with a hammer to cut through the steel straps when opening a pallet. That's hard on a knife and probably pretty similar to cutting a nail.

We're probably gonna shoot the video for the HDFK N.A.S.K. tomorrow and I think I'll cut a 1/4-20 bolt instead.

 

[Casinostocks]

^ Epic

Edited to add: the operative phrase as stated: "applied to carefully controlled geometry"... I take it being as not all D3V HT being the same.

 

[ManOfSteel89]

Oh man don't destroy the poor thing! Send it to me (along with my other 2)

 

[Nathan the Machinist]

Oh man don't destroy the poor thing! Send it to me (along with my other 2)

I'm not going to destroy anything. It will be fine. I intend to keep it after the demo for use around the shop. About the only way to break it would involve a cheater bar and a vise.

 

[Wood5045]

[QUOTE="Nathan the Machinist, post:
We're probably gonna shoot the video for the HDFK N.A.S.K. tomorrow and I think I'll cut a 1/4-20 bolt instead.[/QUOTE]

 

[ManOfSteel89]

I'm not going to destroy anything. It will be fine. I intend to keep it after the demo for use around the shop. About the only way to break it would involve a cheater bar and a vise.

I look forward to the video! Do you think you could get similar results in a 3/16" stock thickness?

 

[trevitrace]

Don't know about nails, but it does wonders on oak.

 

[ManOfSteel89]

Don't know about nails, but it does wonders on oak.

View attachment 768823

The way that bark is laying on the belly I thought it was chipped out!

 

[Nathan the Machinist]

^ that's a BC. It will cut nails without any problem.

 

[TommyGun56]

Looks like the D3V fairs very well against Infi

 

[ManOfSteel89]

^ that's a BC. It will cut lesser knives in half without any problem.

Fixed it for ya!

 

[trevitrace]

The way that bark is laying on the belly I thought it was chipped out!

Thankfully still chip free.

 

[Casinostocks]

Try to keep it that way.

 

[91bravo]

Don't know about nails, but it does wonders on oak.

View attachment 768823

I'm gonna have to go out on a limb and say that is the best looking CPK here! To me, the ones with the battle scars look the best! I said to hell with all safe queens long ago!