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View Full Version : What causes the profile of a knife to flatten after multiple sharpenings?



bechler
01-15-2013, 07:11 PM
Today when I was leaving work I noticed a coworker had a suisin that was completely flattened along the edge. This was obviously due to his sharpening technique but what is he doing to cause that to happen to his knife?

JBroida
01-15-2013, 07:19 PM
not adjusting for the tip or curve... thats about it.

mhlee
01-15-2013, 07:20 PM
I've had this happen when I used (1) too coarse of a stone when I was just learning how to sharpen and ground out/flattened the curve of the edge, and (2) put too much pressure on that part of the edge.

Then again, maybe he wanted it that way.

EdipisReks
01-15-2013, 07:27 PM
not adjusting for the tip or curve... thats about it.

x2

mhlee
01-15-2013, 07:38 PM
not adjusting for the tip or curve... thats about it.

That too. ;)

El Pescador
01-15-2013, 07:54 PM
Sometimes people only sharpen the part of the blade that's dull...usually the middle of the blade.

bechler
01-15-2013, 07:56 PM
not adjusting for the tip or curve... thats about it.

What is the best way to adjust for the tip or curve?

El Pescador
01-15-2013, 07:58 PM
trace the edge profile of the knife onto a piece of paper, then match it to the paper silhouette after you sharpen.

bechler
01-15-2013, 08:09 PM
And what does that do? I have seen numerous techniques when sharpening the tip and i want to get an opinion on which ones are the most effective. Thanks!
trace the edge profile of the knife onto a piece of paper, then match it to the paper silhouette after you sharpen.

Zwiefel
01-15-2013, 08:18 PM
This is the technique I use.


http://www.youtube.com/watch?v=tmBTO0cA_qw

It's a little awkward at first, but it's easy to develop a rhythm after a bit of practice.

JBroida
01-15-2013, 08:29 PM
i think i need to reshoot this for a better quality video and also a better explanation... i hope to do this soon.

El Pescador
01-15-2013, 10:37 PM
And what does that do? I have seen numerous techniques when sharpening the tip and i want to get an opinion on which ones are the most effective. Thanks!

Jon's video will teach you to sharpen the tip. The silhouette will help you maintain the profile so you can figure out if you've sharpened the correct amount to maintain the original profile.

Crothcipt
01-17-2013, 02:03 AM
Wow John you make that look so easy. Now to try to do that ambidextrous.

cheezit
01-17-2013, 02:11 AM
That's a really cool technique, John. Thanks for sharing it! I don't usually feel as though I have any issues with my tips (or profiles), but I'm definitely going to have to give that a try - it looks wicked easy. Thanks again.

franzb69
01-17-2013, 02:22 AM
i sharpen ambidextrously. heavily left handed biased tho. lol.

ChiliPepper
01-17-2013, 09:49 PM
Yes, Jon please reshoot that video: we want to see another one of your awesome t-shirts!!!
:justkidding: