best blade edge is 90 degrees

[lobo9er]

http://www.ehow.com/how_4540198_best-knife-sharpening-angles.html
I am new to knife sharpening as an obsession. I used to keep things sharp but over the past year its gotten bad so anyhow i ran into this article.
I usually try for a 20 degree angle on both sides forming a 40 to 45 degree angle on the blade edge. what do you guys think of a forming a 90 degree angle? before i cared about being able to shave with every blade in the house and reading "how to's" on the interwebsso I thought I would share this article and see what people thought.

 

[Hunter125]

I'm not sure where the guy who wrote the article got his information, but it is not right at all. The angle that razor blades are sharpened to is 23 degrees, and Lansky sharpeners that clamp to the knife while you sharpen the blade have angles ranging from 19 to 30 degrees. I believe the small wedge that comes with Smith stones is 23 degrees, but am not sure about that, as I haven't used one in such a long time. These guys are pros, they even do axes.
If a 45 degree edge is sharp enough for what you are doing, it will last a long time, but the sharper the knife the safer it is, less chance of slipping when cutting with it.
The solution to keeping a sharp edge longer is to put a double edge on your blades, which the razor edge guys teach. basically you sharpen the knife to the sharpest angle you want, mine are usually 19-23 degrees, then you put a very fine edge on after you are done that is a shallower angle or less sharp, creating a shallower v on the end of a much steeper v. Doing this, the edge stays a little longer, but you will be astounded with how sharp it is.
Stropping the blade with leather is also one of the keys to a sharp blade. If you have burrs hanging on, you will have a rough edge that may be sharp, but won't be smooth.
I would make sure you go to a more credible source than a how-to website where anyone can post.

 

[lobo9er]

I though some would find that article interesting

 

[M-Cameron]

now i dont know what it was that guy in the article was smoking......but i can assure you its not legal.

i can honestly tell you, that if you sharpen a knife to a 90* angle.......no matter how smooth you get the edge.......you wont be able to cut hot butter.

depending on use......a good edge for a pocket knife is anywhere between 20-30* per side.......typically the heavier the cutting, the wider the angle.....the finer the cutting, the thinner the angle....

 

[Effigy]

90 degree blade angle? LOL. Apparently a square table leg is the perfect "blade."

 

[hso]

I though some would find that article interesting

Interesting?

It is moronic.

 

[heron]

If there were any truth to that article, all the famous knife-makers would be doing theirs that way . . .

 

[Walking Dead]

I think maybe your sharpening the wrong side of the blade.