Steel Edge Retention testing

The good news is that it shows your system is accurate enough to detect the difference in cutting ability.

edit: Are you going to post the results to 60g?
 
oh. i do wish you hadn't shown me those two knives. especially the big one.

without questioning your testing methods, THANK YOU, i am curious what might occur if a blade was tested before and after cryo-treating. you might receive support in your testing (free rope! :D ) if you mentioned the idea to those who sell their treating service.

it would be a good excuse to have some blades cryo treated.

that bulat wootz blade you showed a picture of made me want to cry it was so beautiful. i think it is such wonderful artwork it is *almost* a shame to use it.. any pictures you wish to show of that one i will enjoy greatly. Wootz is my dream steel, and I understand those who love INFI, or any other... i think chasing 'supersteel' has been a passion for many people, and it's because there is a hint of magic, a bit of the unexpected and wonderful, always just beyond your reach.. there's always more to learn, more to appreciate.

I have some boxes full of good whetstones, a 'few kilos' .. and know what a sore wrist and elbow feel like..

thank you very much. take your time. it is wonderful that I do not have to do any of this work. :thumbup:
 
Just poping it up.

Thanks, Vassili.

P.S. I am thinking to start doing it again, my arm is feeling better and I am thinking of some way to cut rope without injuring hand...
 
I made new testing set out of wenge wood - kind of up scale... One piece for thread cutting one for manila rope:

Random-420.jpg


Based on Taledo experience I decided to use free hanging thread to make sure anybody can reproduce my testing - it is easy to reproduce free hanging thread then one under unknown tension.

I did comparison testing and it turns thet results on free hanging rope bit different - bigger, but still show good Gauss dispersion and describes state of the edge well:

Thread under tension:
00 +
10 +++++++++X+
20 +++++++++

Free hanging
40 +++
50 +++++++X
60 ++++++
70 ++++

It is even better then results are bigger - it is easy to work with high sharpness - under tension it is too close to 0.
I also have spring postal scales fro OfficeMax - bit better then kitchen scales, but Oz only... So results will be in oz not in gramms.

Because of this two things new results will be harder to compare with old... Sorry.

Thanks, Vassili.
 
New results on 1/10 oz. This is RosArms Fox II 110X18, Kiku Matsuda Tanto II OU-31, M.D.Caldwell & Co 1-6 154CM, Swamp Rat Ratmando SR101 (52100), Busse Badger Attack INFI:

Num Fox Tan MDC Rat BA
000 020 030 025 025 020
001 035 030 025 025 025
002 035 030 030 030 025
003 035 035 035 030 030
004 035 035 035 030 030
005 040 035 035 030 035
007 035 040 040 030 035
010 040 030 040 030 040
015 040 030 040 030 040
020 040 030 040 030 040
030 050 040 040 030 050
040 060 040 040 035 050
050 060 045 040 040 045

...to be continued...

Thanks, Vassili.
 
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Cool results, but edge retention is only one factor...
Chopping power is much more important for me: I use my knives mostle to chop branches or trees.
 
oh god, not a rehashing of a nozh2002 thread? jeez. Everyone was wrong except him at everything. I think even at sex, the rest of us got it wrong and he had it right.

The sad part was that I think he was on to something with his testing, but he did not have a good grasp of how edge and blade geometry affect cutting ability even more so than steel choice and he was not willing to see other viewpoints.
 
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