Login    Register
User Information
Username:
Password:
We are a free and open
community, all are welcome.
Click here to Register
Sponsored
Who is online

In total there are 46 users online :: 5 registered, 0 hidden and 41 guests


Most users ever online was 218 on Wed Dec 07, 2016 6:58 pm

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot] based on users active over the past 5 minutes

The Team
Administrators
Global Moderators
global_moderators.png CS

Knife Thread

All non-spudgun related discussion goes here such as projects, theories, serious questions, etc. All "off-topic" posts (aka useless posting, determined by moderators) will be removed.
Sponsored 
  • Author
    Message

Unread postAuthor: jakethebeast » Thu Oct 13, 2011 12:36 am

No, dont forgot it, its actually very easy to do. I can make a video of differential heat treating if you want :)
  • 0

Est Sularus Oth Mithas
User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 934
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 11

Unread postAuthor: Yamroll » Thu Oct 13, 2011 1:10 am

Well, I had some success with the bowie. The hamon line isn't terribly visible, but it's definitely there.

The newer project will be 1075, hoping to get a bit more of a response out of a slightly more hypoeutechtoid steel.
  • 0

User avatar
Yamroll
Specialist
Specialist
 
Posts: 42
Joined: Tue Apr 12, 2011 10:08 pm
Reputation: 0

Unread postAuthor: jakethebeast » Thu Oct 13, 2011 2:42 am

You did etch the blade did you? :wink:
  • 0

Est Sularus Oth Mithas
User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 934
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 11

Unread postAuthor: Yamroll » Thu Oct 13, 2011 10:05 am

I have etched it with a repeated hot cider vinegar bath, but I'm finding the oxidation of the edge in comparison to the back isn't extreme enough to produce a strong hamon.

Given this was my first attempt at the hamon, I suspect I would have had an easier time with a steel with less vanadium and manganese. It is functional, however.
  • 0

User avatar
Yamroll
Specialist
Specialist
 
Posts: 42
Joined: Tue Apr 12, 2011 10:08 pm
Reputation: 0

Unread postAuthor: jakethebeast » Thu Oct 13, 2011 11:42 am

Hmmm, sand the blade to 2000grit and LIGHTLY etch it, then it should be more visible
  • 0

Est Sularus Oth Mithas
User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 934
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 11

Unread postAuthor: Yamroll » Fri Oct 14, 2011 12:52 am

Yeah, I'm gonna give a harder etch a try, but after I'm fully satisfied with the polish
  • 0

User avatar
Yamroll
Specialist
Specialist
 
Posts: 42
Joined: Tue Apr 12, 2011 10:08 pm
Reputation: 0

Unread postAuthor: jakethebeast » Fri Oct 14, 2011 1:24 am

No no no no, perfekt polish and LIGHT etch, that is what you want. The etch is just for getting the hamon to look little darker, the polishing is to get is visible
  • 0

Est Sularus Oth Mithas
User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 934
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 11

Sponsored

Sponsor
 


Unread postAuthor: Crna Legija » Fri Oct 14, 2011 2:47 am

Do you think Bisalloy plate would be good steel for a Bowie knife/machete, I can get Bisalloy 360, and Bisalloy 500 from work for free.

it would be in 6,8 or 10mm thick.
  • 0

'' To alcohol... The cause of, and solution to, all of life's problems.”
--Homer Simpson

Add me on ps3: wannafuk, 8/11/11 cant wait
User avatar
Crna Legija
Major General
Major General
 
Posts: 2333
Joined: Sun Jul 20, 2008 5:14 am
Location: australia
Reputation: 0

Unread postAuthor: Yamroll » Fri Oct 14, 2011 12:26 pm

Crna Legija wrote:Do you think Bisalloy plate would be good steel for a Bowie knife/machete, I can get Bisalloy 360, and Bisalloy 500 from work for free.

it would be in 6,8 or 10mm thick.



From what I've read about it, I'm not certain it would be a decent blade steel.

It seems the number (360 / 500) represents the Brinell hardness. Translated to Rockwell hardness (standard for knives) you're looking at around 39 HRc and 51 HRc respectively.

39 is right out. 51 is pretty damned soft but might be doable.

With a proper heat treat, a lot of steels can be hardened pretty well. There are two issues I'm seeing with the bisalloys though. The steel is hardened at the factory, which means further heat treat to increase hardening might not be feasible.

The other problem I see is the alloying elements.
360 seems to have around 0.18% carbon
500 seems to have around 0.32% carbon

For comparison, many carbon steel knives are between 0.75% and 0.95%.
The carbon content provides hardenability, which is a property you'd definitely want on anything with a cutting edge.
Larger swords are often around 0.55% and 0.65%, mainly because that's an application where exceptional toughness is required and edge hardness can be sacrificed.

Both steels have a fairly complex array of other alloying metals which might further complicate a heat treat.

Given that further hardening would be pretty near unfeasible for the hobbyist bladesmith, I think you'd be stuck with the bisalloy 500 for anything resembling an edged tool.

With the complexities of the steel and the fact that it's hardened at the factory, I wouldn't think it would be wise to try to anneal it. You'd be stuck working with it in its hardened state (although, that is still relatively soft).

The silicone content in the alloy, the softness of the steel and the carbon content has me thinking it would be really tough, probably very easy to sharpen. You just wouldn't see that edge last past a few whacks.
  • 0

User avatar
Yamroll
Specialist
Specialist
 
Posts: 42
Joined: Tue Apr 12, 2011 10:08 pm
Reputation: 0

Unread postAuthor: saefroch » Fri Oct 14, 2011 2:57 pm

Just to interject: I'm home on break for a few days, and my dad picked up a free knife by these guys at a conference while I was at uni, I'll post pics and specs when I get my hands on it. Seems interesting, no?
  • 0

User avatar
saefroch
Major General
Major General
 
Posts: 1679
Joined: Mon Jun 08, 2009 8:47 am
Location: U.S.A.- See Map
Country: United States (us)
Reputation: 0

Unread postAuthor: Yamroll » Fri Oct 14, 2011 3:11 pm

Spyderco makes some really nice knives. I'm a pretty big fan of their stainless folders. It'll be cool to see what you wind up with, free is a great price. :lol:
  • 0

User avatar
Yamroll
Specialist
Specialist
 
Posts: 42
Joined: Tue Apr 12, 2011 10:08 pm
Reputation: 0

Unread postAuthor: jackssmirkingrevenge » Sat Oct 15, 2011 8:08 am

Look what came through the post today :D

Jake, I'm speechless, amazing work! I can see how much effort you put into this, thanks so much!
  • 0

Attachments
jakeblade.JPG
User avatar
jackssmirkingrevenge
Donating Member
Donating Member
 
Posts: 24225
Joined: Thu Mar 15, 2007 11:28 pm
Country: Holy See (Vatican City State) (va)
Reputation: 66

Unread postAuthor: jakethebeast » Sat Oct 15, 2011 8:15 am

Im very happy that you like it! Its my first dagger blade, and for that i think its pretty ok.
  • 0

Est Sularus Oth Mithas
User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 934
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 11

Unread postAuthor: jakethebeast » Wed Oct 26, 2011 4:24 pm

going to kick this damn thread back to life, whit pics of the raw shieth of the 5" bladed puukko :) just tell me what you think about it, im trying to get it finished tomorrow

Image

Image
  • 0

Est Sularus Oth Mithas
User avatar
jakethebeast
Brigadier General
Brigadier General
 
Posts: 934
Joined: Sat Jul 03, 2010 4:20 pm
Location: Jakes cave
Country: Finland (fi)
Reputation: 11

Unread postAuthor: Gun Freak » Wed Oct 26, 2011 4:25 pm

Ehh, it's ok....

Just bustin your balls, nice job. I wish I had skills like that.
  • 0

OG Anti-Hybrid
One man's trash is a true Spudder's treasure!
Golf Ball Cannon "Superna"M16 BBMGPengunHammer Valve Airsoft SniperHigh Pressure .22 Coax
Holy Shat!
User avatar
Gun Freak
Lieutenant General
Lieutenant General
 
Posts: 4969
Joined: Mon Jan 25, 2010 4:38 pm
Location: Florida
Country: United States (us)
Reputation: 11

PreviousNext

Return to Non-Spudgun Related Discussion

Who is online

Registered users: Bing [Bot], Exabot [Bot], Google [Bot], MSNbot Media, Yahoo [Bot]

Reputation System ©'