Blade Length

[Rajat]

esssee: More than likely the handle can be removed by heating if it is fixed with the coal tar like substance but since you have mentioned that this is a showpiece kukri then in my opinion you should not even try to remove the bade from the handle to try to temper it, if this is the purpose, and then get into the complexities of fixing it back again by yourself.

If it really is a showpiece kukri then trying to temper is not worth the effort, just sharpen it if you want to use it for fun. Since you have already worked in a forging unit earlier you know what I mean.

[abhrankash]

esssee: More than likely the handle can be removed by heating if it is fixed with the coal tar like substance but since you have mentioned that this is a showpiece kukri then in my opinion you should not even try to remove the bade from the handle to try to temper it, if this is the purpose, and then get into the complexities of fixing it back again by yourself.

If it really is a showpiece kukri then trying to temper is not worth the effort, just sharpen it if you want to use it for fun. Since you have already worked in a forging unit earlier you know what I mean.

Dear sir,
In context to the words of Rajat ji I would like to say that in our manufacturing industry tampering is done to remove the stress of the material which occurs due to hardening process and generally it bring a soft nature of the material which is easy to be machined.So,if you want to hardened the piece also it may crack also if the temperature of the furnace is uncontrollable it may get heated above the critical temperature.
And about reassembly, after going through the process the hole made to fix the handle may get deform or may ran out of actual center distance their you may have the problem of fixing the handle back with the original matching to get back the real aesthetics as it was earlier.Above all it depends on the steel which can be or cannot be hardened.
STEEL GRADES----------------HRC TO GO WITH
EN-31-------------------------------50-58
EN-353-----------------------------52-55
C-45--------------------------------30-38
MILD STEELS----------------------30-38
P-20(PRE-HARENED 30-38)-------50-52
P-20NIMAX(40-42)----------------52-55
ORVAR SUPREM-------------------60-62
SPRING STEEL---------------------48-52(BEST STEEL FOR BLADE)
Basically show pieces are not made out of that good quality of steel that you can go for.

Best option to make a khukri is make it out of a spring steel (LEAF SPRING)use for shock absorber in trucks and other vehicles.
But in this also you have to do the hardening and quenching must be done either in oil bath or in water(COLD)

[essdee1972]

Hey, thanks a lot guys!
Out of the deep recesses of my memory, I (helped by some liquid products from Scotland ) dug out my long-neglected knowledge of metallurgy which my profs rather unsuccessfully tried to hammer into my head all those years ago. And basically, my memory agrees with what Rajat and Abhrankash say above. So I finally decided to go for a good Nieto / Cold Steel / Muela as a survival knife. And like my earlier kukri, which broke sometime back, and which I had obtained from a Gurkha regiment soldier more than 15 years ago, I will try to persuade another GR guy to gift me his Kukri! Great knives, the real Kukris, what say, guys?
Cheers!

[abhrankash]

Hey, thanks a lot guys!
Out of the deep recesses of my memory, I (helped by some liquid products from Scotland ) dug out my long-neglected knowledge of metallurgy which my profs rather unsuccessfully tried to hammer into my head all those years ago. And basically, my memory agrees with what Rajat and Abhrankash say above. So I finally decided to go for a good Nieto / Cold Steel / Muela as a survival knife. And like my earlier kukri, which broke sometime back, and which I had obtained from a Gurkha regiment soldier more than 15 years ago, I will try to persuade another GR guy to gift me his Kukri! Great knives, the real Kukris, what say, guys?
Cheers!

Dear sir,
Make your khukri out of spring steel.

Or try to get new one but authentic.

[essdee1972]

Yeah, I am looking for a "forger" in Mumbai, who can make a Kukri for me. Also looking for a Army issue Kukri... will let you know if I succeed in any of the quests...

[abhrankash]

Yeah, I am looking for a "forger" in Mumbai, who can make a Kukri for me. Also looking for a Army issue Kukri... will let you know if I succeed in any of the quests...

Dear sir,
should I send you 3d model of a good knife made with the help of 3d engineering software so that you can machined the knife by the help of CNC machine. you have to send me the photo and the length,width,and the thickness of the blade.If you are interested then only I will do the exercise.

This will be a individual model which can be manufactured by individual machining process.
or If you want to have the forging die also that I can even design.(its free from commercial Intentions my doors are always open to all members)

also with the 2d design of autocad so that you can check the accuracy of the manufacturing process and go for hardening process after it is being machined.

[Rajat]

should I send you 3d model of a good knife made with the help of 3d engineering software so that you can machined the knife by the help of CNC machine. you have to send me the photo and the length,width,and the thickness of the blade.If you are interested then only I will do the exercise.
(its free from commercial Intentions my doors are always open to all members)

[essdee1972]

Great!!

Thanks, buddy, thanks a lot!! Fantastic offer!!

However, I don't have ready access to autocad nor to CNC machine. I am currently searching for a "desi forger", who can forge / machine / temper the knife by hand. And believe you me, such people are very difficult to find in a big city. In my hometown, I know of at least 9-10 people like that.

Will send you the photos of the desired knife (the showpiece Kukri). PM me your mail ID.

Cheers!

[Subal das]

abhrankash, you seems to have good knowledge of steels and machine, hope you will stay on this forum and keep sharing your knowledge.

I have few questions if don mind

is T10 and T20 steel available in India, in China some good looking katanas made of these steels.

this steel you mention ORVAR SUPREM 60-62 perhaps it can be hardened up to 56-58 and be not so brittle

any idea from where such steel can be obtained and what price?
do you know some company which can make custom blade on CNC machine.?

[abhrankash]

abhrankash, you seems to have good knowledge of steels and machine, hope you will stay on this forum and keep sharing your knowledge.

I have few questions if don mind

is T10 and T20 steel available in India, in China some good looking katanas made of these steels.

this steel you mention ORVAR SUPREM 60-62 perhaps it can be hardened up to 56-58 and be not so brittle

any idea from where such steel can be obtained and what price?
do you know some company which can make custom blade on CNC machine.?

Dear sir,

Yes, these kind of steels can be found in India,in case of Orvar suprem you can go up to 60-62 HRC but depends up on manufacturer.
Deliberately you may not get T-20 but you can get the corresponding grade. That I will let you know.

I am having experience of 8 yrs of handling CNC machine floors and die assembly used to manufacture plastic auto parts ( I use design plastic products and plastics injection molds)

[essdee1972]

Yes, Abhrankash, I would like to second Subal's comments.
I think SAIL and Tata Steel publish all grades of steel they make in their yearly diaries. I had one of them circa 1997, let me see if the required steels are there. I did use to have a grade conversion table for alloy steels (US ASTM code to UK code to Russian code to Indian, Japanese, etc. - like the size conversions you see in clothes). Let me search for it this weekend.
But getting these steels in small quantities for a few knives will be the issue.
I am also looking out in Mumbai (believe me, these "desi forgers" are far easier to find in small towns - I knew of about 8-10 in my hometown back in UP). Will let you know if successful.

[abhrankash]

Yes, Abhrankash, I would like to second Subal's comments.
I think SAIL and Tata Steel publish all grades of steel they make in their yearly diaries. I had one of them circa 1997, let me see if the required steels are there. I did use to have a grade conversion table for alloy steels (US ASTM code to UK code to Russian code to Indian, Japanese, etc. - like the size conversions you see in clothes). Let me search for it this weekend.
But getting these steels in small quantities for a few knives will be the issue.
I am also looking out in Mumbai (believe me, these "desi forgers" are far easier to find in small towns - I knew of about 8-10 in my hometown back in UP). Will let you know if successful.

Dear sir,
Here is one picture of a dagger designed by me,by using a software named UNI GRAPHICS, It took me around 1hr to design this.

[Subal das]

do you think you can design of even make such kukri

http://www.extremaratioknivesdivision.e ... ksklkh.pdf

WEIGHT: g 525
BLADE LENGHT: mm 345
OVERALL LENGHT: mm 475
BLADE THICKNESS (MAIN): mm 6,3
BLADE STEEL: N690 (54HRC)

[abhrankash]

do you think you can design of even make such kukri

http://www.extremaratioknivesdivision.e ... ksklkh.pdf

WEIGHT: g 525
BLADE LENGHT: mm 345
OVERALL LENGHT: mm 475
BLADE THICKNESS (MAIN): mm 6,3
BLADE STEEL: N690 (54HRC)

http://www.extremaratioknivesdivision.e ... /kukri.htm#

yeah!!!!!!!Sir,

1.just send me the cross section photograph so that I can have a better Idea about the cross section.
and the angle of the bend that the khukri is having on the top of the blade.


2.Sorry sir, now i did use my little brain and downloaded a software which can convert pdf data to engineering data
actually that's a radius not an angle its a radius around R150,000 so the blade seems almost straight,
so, don't worry just send me the pdf of cross section of any khukri and I will use my KHURAPAHTI DEMAG to design this but it will take some time.
thanking you!

-- Wed Dec 08, 2010 1:24 pm --

do you think you can design of even make such kukri

http://www.extremaratioknivesdivision.e ... ksklkh.pdf

WEIGHT: g 525
BLADE LENGHT: mm 345
OVERALL LENGHT: mm 475
BLADE THICKNESS (MAIN): mm 6,3
BLADE STEEL: N690 (54HRC)

http://www.extremaratioknivesdivision.e ... /kukri.htm#

Dear sir,
This done by converting Pdf to 3d curve this is the actual dim you have told (all achieved)
if send me the cross section then rest of things can be completed.(now this will take time)

this is the profile only(based on this rest of the thing will be done)

[Subal das]

I was searching for back bone picture of extrima kukri and found this thread. realty it is never enough to educate yourself before buying any knife.

http://www.britishblades.com/forums/sho ... ot-all-bad

for knife which cost $325 that is real horrible report. nice design but steel and hardening chosen seems to be wrong

see some kukri profiles are here pretty simple

http://www.bladeforums.com/forums/showt ... ?p=7036322