Just How Sharp Are YOUR Knives?

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I liked your test so i tryed notebook paper it was to easy so i went to phone book paper that i feel is a little more of a challenge the bottle is a snap noproblem but it take perfect aim to cut the bottle it is almost as wide as my blade i use a temperance and a manix in these test liked your test so much started a post like it in spyderco fourms but no one has answered the call except for redhawkp44 with the split hair thats a good trick i aways cut the hair in too instead of spliting it. thanks for the cool post the paper roll drives my freinds nut trying it:cool: :thumbup:
 
Nice pics. I admire your ability but i don't fully share the way you consider a blade has to be sharpened. Shave and split hair or chop a paper roll is nothing else than pushcutting. But cut harder stuffs like wood or strong ropes is an other issue. Slicing ability is needed and for that job i have to put somes microteeths on a mirror polished edge by somes passes on a coarsed whetstone. It decreases the pushcutting ability of the blade (forget then the hair shaving performance) but increases the slicing ability i generally need.
What do you think about?

dantzk.
 
I think when classically people are thinking about sharpness they are talking about the kind of sharpness people here have been posting. otherwise, my bow saw would be considered the sharpest for its wood cutting ability.

A toothy edge is not necessarily sharp....its toothy and will cut materials that respond to a toothy edge better. A bow saw will cut a log in half but I doubt many people would describe it as a marvel of sharpness because of that.

As for rope cutting, in cutting comps, a very similar edge as is required to perform paper tube is optimal. The tough part is getting that type of edge that will also stand up to heavy wood chopping, etc. its a combination of sharpness, edge geometry, and heat treating technique.

There are many ways to define sharp. Some would say a dagger is sharp because it can pierce deeply when stabbed.

I would say most here have responded under the assumption that when someone asks how sharp your knives are, they are referring to hair-splitting sharp, not how well it rips through meat due to its coarse edge.
 
TikTock said:
I would say most here have responded under the assumption that when someone asks how sharp your knives are, they are referring to hair-splitting sharp, not how well it rips through meat due to its coarse edge.
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Yes, you are right, it seems hair shaving is the common reference to evaluate an edge. I just prefer my own way which comes from my knives uses: what amount of strength on the blade to push cut, and after, to slice a match? What i look for is a satisfactory compromise. Don't get me wrong, i appreciate the job shown on the pics.

dantzk.
 
Generally sharp enough to shave with but some I keep just a little sharper.


Single sheet of printer paper with paper clip inserted ~.5" from top edge and hung with sewing thread from ceiling cut in half with a spyderco endura.



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I know it's not straight I'm a little out of practice what can I say:rolleyes:
 
I have an edgepro and my knives are not nearly as sharp as what you guys have. Are you giving it a polished edge and if so at what grit? Can someone go over what they do to make there knives that sharp.
 
I use a blue sarcen stone from stone henge (small of coarse) and yak spit from from eastern bred inner mongolian yaks their the best. Don't be tempted to use camel spit it plugs up the poors in the stone really bad:thumbdn: :thumbdn: .





OK there is one in every croud:D :D

In reality I mainly use a Spyderco Sharpmaker. while I do use Arkansas and Japanese water stones the sharpmaker is hard to beat.
 
KMG grinder set to angle @ 600, 800 grit, then simichrome polish on a barber's stick strop. On my own knives i slack belt it the whole way @ 600 and leave it.
 
Bors said:
Generally sharp enough to shave with but some I keep just a little sharper.


Single sheet of printer paper with paper clip inserted ~.5" from top edge and hung with sewing thread from ceiling cut in half with a spyderco endura.



HPIM1346.jpg



I know it's not straight I'm a little out of practice what can I say:rolleyes:
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ooo ive been doing it all worng then by jsut cliping the paper and not hooking it like you :o
 
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