Edge retention testing compared - analysis

I just got back from pounding Cobalt’s old 1-300 through three 8-10 inch diameter x 20-inch long hunks of weather hardened oak that had been sitting out in back of my girlfriend’s house for the past two years (she wanted kindling and I wanted to play…. errrrr with the knife). To make it a bit tougher the wood got rained on twice in the past two weeks so it was wet around the edges.

I beat the knife with an 18 inch long piece of 2x4 that I had chopped a handle section into. The oak didn’t split right away so I had to whack the knife on the tip a lot to get it through.

And yes after making two boxes of kindling the knife did still take hair off my arm. It didn’t seem to dull the edge much at all. When I got home I ran it on a strop and it is as sharp as ever in less than five min. :thumbup:
 
If Jerry said it was the best I believe him, end of story(for me).

And looking at these test make my head hurt:(


And how in the heck is Cobalt opening closed threads:confused: Nevermind, that would just give me a headache to
 
Thanks Tony,Now thats an impressive test that I can understand:thumbup:
 
Ken44 said:
And how in the heck is Cobalt opening closed threads:confused: Nevermind, that would just give me a headache to
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becareful, or I will wrap this one up, and shut you all down because..

I HAVE THE POWER:eek:
 
Well the Limited Power he does have is better than the Zero Power he did have:p



J/K Cobalt, please don't shut us down with your new powers
 
Back in the 80's, I skored a 9" Hartsfield and never looked back. BUT--- right now I'm think'n about get'n a Busse. I mean, from what I've heard, there's nothing like a Busse. Hmmm, which one?
Lycosa
 
Lycosa said:
Back in the 80's, I skored a 9" Hartsfield and never looked back. BUT--- right now I'm think'n about get'n a Busse. I mean, from what I've heard, there's nothing like a Busse. Hmmm, which one?
Lycosa
Click to expand...

I've seen you in this room way to much for you not to have a Busse

Just get one:p:D;)
 
cobalt, if you can do me a favor, please get the yellow chiclet removed from Sus Scrofa's profile, he's a newbie and was framed. :thumbup:

.
 
ThunderUnderKilt said:
I'm not sure what you mean by "errors" in the data. I just see noisy data with precision only to the tens place. As far as smoothing the data goes, I agree that you can filter the data, but filtering only smooths the data. It doesn't allow you to extrapolate. The way I usually do this is to do some sort of curve fit. This usually requires me to have a of model of the trend I'm matching. Since my background is in Electrical Engineering, I'm not familiar with a good model to match this data to. So I decided to try a least-squares fit using a 3rd order, 5th order and logarithmic model.

The 420HC data was interesting since it seemed to show the greatest coverage from "sharp" to "dull"
420hc.png


The only insight I gain from this plot is that my models don't match the data, and that it's a non-trivial task to determine a reasonable model. If you have a better model, I'd be interested in running it against the data. However, drawing in a trend by hand is too subjective in my opinion. It allows people to make the data fit any trend they wish it to fit. Lets look at the rest of the data sets.

infi.png

ffd2.png

ats.png

lau.png
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I've been staring at these all day, but after a few beers, eureka!!! I got it!!!!!!!!!!!! These are diagrams on how to make LANYARDS!!! Finally, I see the light!! :thumbup: :D

...No? Well then... Is it an L.A. mass transit system map?? :confused::confused:




;)
 
alright boys I am shutting this one down for 1 hour.....


psyche!!
 
Ken44,
Busse or marriage? Busse or marriage? It will happen--- at the right time.
MC!!
Lycosa
 
Jaxx said:
I've been staring at these all day, but after a few beers, eureka!!! I got it!!!!!!!!!!!! These are diagrams on how to make LANYARDS!!! Finally, I see the light!! :thumbup: :D

...No? Well then... Is it an L.A. mass transit system map?? :confused::confused:




;)
Click to expand...

Actually, it's proof you can force a fit to anything. :)

Fits aren't much use if you don't know the underlying physical processes beforehand.
 
KEN44,
I'll get some pics tonight when she comes out of the shower! I'm biased, but it will have to be a really good-look'n Busse!
Lycosa
 
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