Damaged edge angle

foxyrick said:
Yeah, I'm just waiting for Old Physics to come in at a tangent and sine his name on the thread!
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Never happen.

Because then I'd have to recommend that we avoid measuring angles in degrees and start using something much more natural -- radians. :D

And I'm pretty sure no one wants that. :(
 
nozh2002 said:
I want this to be clear and take other approach to do angle measurement. I use clay and penetrate it with edge up to the shoulders. I was careful not to change this angle when I removed edge back. Then I made picture and zoom it up. Here it is:

edge-for-Busse-5.jpg


Now it is possible to measure angle. It is clear that angle is no more then 20 degree, even it is little convex.

So in deed damaged edge has drastically altered paper thin edge.

My appologies. I am very sorry for all troubles I cause, to my excuse - I was very sure that angle is about 30 degree. I am glad that it is actually my fault not INFI.

If it is possible - can you duplicate this post to other related threads?

Sorry again, Vassili.
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I wouldn't worry. It's not easy to calculate an angle on something that shape and size. I'm sure the edge angle, however you decide to define it, also changes across the length of the blade, especially toward the tip.

That's a fairly clever way to measure it, though.

You could use optical techniques to measure angular variations across an edge, so you could catch the change from the middle of the blade toward the ricasso (in one direction) and then the tip (in the other).

I'll have to think about this just a bit. ;)
 
I am sorry again I was misread this protractor, reading wrong side of the bar - it is 26 degree. Please, somebody check this too - add protractor to screen.

Thanks, Vassili.
 
nozh2002 said:
I am sorry again I was misread this protractor, reading wrong side of the bar - it is 26 degree. Please, somebody check this too - add protractor to screen.

Thanks, Vassili.
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This guy is too much. That blade is not even close to 26 included. That angle at best is 20, and I'd bet it is closer to 18 or less, which is 9 per side or less. Once again, do not fall for this guys seemingly apologetic post because he has done this before and then goes off. He's already changing his mind on degrees.

I have chopped with 14 degrees per side into knots with no problems. And I know for fact that INFI starts to ripple at 8.5-9 degrees per side. His knife is definitely at less than 10 degrees
 
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