My edc now has an HHT level 5 edge on it

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Jan 1, 2016
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So I have been carrying a spyderco endura 4 wave everyday since I got it. I know alot of people don't like them but oh well something about it is sweet. Anyways decided I would burn some time last night and put a new edge on it. After sometime with the strop I tried to tree top my arm hairs and it passed easily....stropped some more and grabbed some of my wife's stray hair on her shirt and holy wow I wasn't even sure I touched the hair yet and it was falling to the ground :D
Would love to get a video but I have no way of doing that except with my phone and I doubt that will show up. Here are a couple pics of the edge. Just wanted to share what i think is pretty darn cool even though I'm sure it won't cut alot of my edc stuff worth a darn

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Thick blade with a HHT-5 sharpness? I have my doubts.

VG-10 seeming sharp enough to be rated at a HHT-5? Well, I think that's possible.

Straight razors and knives are pretty far apart in that test though.
 
Seems like you have the skills, If you get bored taking those enduras to a zero grind puts one hell of an edge on it .

As far as the OP good job. Something satisfying about getting a knife ridiculously sharp.
 
Thanks guys.
Jason I know what you mean by you have your doubts. I didn't think it would have been possible but it does do it I swear lol my micrometer is reading .003 right behind the cutting edge if that helps. Maybe it's just easier for me to cut her hair. If in had any head hair I'd try mine but I don't.

Ill edit and say the .003 is not on the main bevel. It's about 1/32 from the actual edge.
 
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Thanks guys.
Jason I know what you mean by you have your doubts. I didn't think it would have been possible but it does do it I swear lol my micrometer is reading .003 right behind the cutting edge if that helps. Maybe it's just easier for me to cut her hair. If in had any head hair I'd try mine but I don't.

Ill edit and say the .003 is not on the main bevel. It's about 1/32 from the actual edge.

Where exactly are you measuring this? .003 is thinner than a sheet of paper... at 1/32" behind the edge, that would be pretttty thin. For example, take a look at this video (around the 9:30 mark for some examples). I have one of his knives... probably the thinnest knife I own, and it's not that thin behind the edge. (Here's also a video on taking measurements).

Nice looking edge though... I don't know all the 'ins and outs' of the HHT, but I'll bet it's sharp! :thumbup:
 
Where I measured at is from the very edge...the part that cuts. Not measuring the back bevel. I'm not home now but I could measure that when i get home..I'm fishing now. Thanks btw!
 
I'll bite. What was your sharpening routine?

You say you stropped a lot. I take it you're not one that's worried about over stropping.
 
I'll bite. What was your sharpening routine?

You say you stropped a lot. I take it you're not one that's worried about over stropping.

I actually did the initial reprofiling of the edge with the blade grinding attachment set at 12 with the x65 belt then the x22 then x4 then a shapton glass 6k,8k,10k. After that it was some daimond paste on the wood backed leather strop down to .5 micron. I'm not to worried about over stropping. I have ruined enough edges that I have become quite capable of knowing when enough is enough and just how much pressure is really needed wich in the final steps is extremely light barely touching the strop kind of pressure
 
You can't measure "behind the edge thickness" while still on the bevel. Your numbers are of no value that way.
 
Just measured the area right behind the polished bevel and it is .042 in. I can understand where the area behind the edge thickness would make a difference in cutting ability on things like paper, cardboard and pretty much anything else that needs to be sliced but how would that make a difference on ability to whittle a hair or tree top when it's all in the actual apex of the edge???
 
I don't quiet get the hht 54321 . If it'll split it once it seems like technique comes into play the rest of the way.

Now I'll say this. I took a factory edge or factory beveled Para 2 touched it up on a sharp maker and could split a hair .
 
I don't quiet get the hht 54321 . If it'll split it once it seems like technique comes into play the rest of the way.

Now I'll say this. I took a factory edge or factory beveled Para 2 touched it up on a sharp maker and could split a hair .
Hi
See coticule.be/hanging-hair-test
The 5 in HHT5 doesn't refer to the amount of slices you can whittle from same piece of hair
HHT-5 - silent slicer: The (moistened 2.5" long) hair falls silently as soon as it touches the edge (0.5" from point of hold).
 
Thanks for clarifying that. Still doesn't seem like it would be that much of a difference to he honest . Maybe with a straight razor but a pocket knife ? I just don't see the point .

I can get a knife hair whittling sharp I just can't whittle a hair myself . Wife on the other hand can split em like nobodies business . That's just my opinion on the test .

With a measurement or proof of some sorts all you can really say is how much is actual sharpness vs technique?

I know it takes a sharp knife to whittle a hair no doubt ,I'm just saying I think it's a little pointless on a knife .
 
I agree with it being pointless. It's more of a inwanted to see if I could get a level 5 thing really. It will be toast come tomorrow at work lol
 
Just measured the area right behind the polished bevel and it is .042 in. I can understand where the area behind the edge thickness would make a difference in cutting ability on things like paper, cardboard and pretty much anything else that needs to be sliced but how would that make a difference on ability to whittle a hair or tree top when it's all in the actual apex of the edge???

Thanks... sounds more reasonable. My .02, geometry and what's behind the edge always matters. It may seem that it's just the apex cutting the hair, but under a microscope it's an ax chopping into a tree. Maybe a false assumption, but there's a reason razors are thin to start with.
 
Thanks for clarifying that. Still doesn't seem like it would be that much of a difference to he honest . Maybe with a straight razor but a pocket knife ? I just don't see the point .

I can get a knife hair whittling sharp I just can't whittle a hair myself . Wife on the other hand can split em like nobodies business . That's just my opinion on the test .

With a measurement or proof of some sorts all you can really say is how much is actual sharpness vs technique?

I know it takes a sharp knife to whittle a hair no doubt ,I'm just saying I think it's a little pointless on a knife .
:) look at it sideway :P
 
Thanks... sounds more reasonable. My .02, geometry and what's behind the edge always matters. It may seem that it's just the apex cutting the hair, but under a microscope it's an ax chopping into a tree. Maybe a false assumption, but there's a reason razors are thin to start with.
sharpening time :) shipping/materials costs
 
My point is will a hht5 knife cut cardboard better than an hht1 knife ?

If you had 2 knives one was hht1 other hht5 would you be able to say of that's just hht1 I don't want it when your cutting a sandwich or opening your mail or breaking down a box?

Personally and no offense to it ,I like sharp things as much as the next guy I just think the numbers is a system made up by knife junkies online .
 
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