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10-29-2015, 08:08 AM #31
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10-29-2015, 09:36 AM #32
This. It is not an exact science, just a way of trying to make sense of varying levels of sharpness. I think we all agree that there are varying levels of sharpness, not just "sharp" and "blunt", and an edge does not magically cross that grey area in between by snapping one's fingers. Yet when someone came up with some sort of scale in attempting to gauge the changes going on at a nearly microscopic level, people yell 'Ah, random numbers, poppycock!'.
The numbers were assigned to make it easier to refer to certain approximate levels of sharpness. That's it. If the people responsible for coining the idea had noticed only three visually distinct stages, lets say blunt-sharp-awesomesharp, that would have been the division.
Originally Posted by coticule.be/hanging-hair-test.html
This reference scale was developed by people mainly using coticules, which due to the nature of the method of use (diluting slurry) make it difficult to pinpoint exactly where one is in the honing process, more so than synthetics where the grit rating gives at least some general indication where one is in the in the progression (assuming the honer has some idea of what he is doing). Any help is welcome, and many find the HHT helpful. Some people say magnification is helpful. Some people say 'Do a pyramid-type jumping back and forth between hones, because it works'. In the end, all we are trying to do is getting a very thin edge very sharp. There is some logical reasoning behind the HHT; it is not something someone came up with by dragging three random hairs across five random edges to look smart.
I think why the HHT scale as mentioned above gets ridiculed here and there is because it can come across as an exact, scientific approach to measuring sharpness, being relatively exact in its wording, even though there are disclaimers in the HHT article on coticule.be that explicitly mention it is merely an indicative tool for edge probing:Originally Posted by coticule.be//hanging-hair-test.html
It may read as if I am repeating myself here, but apparently some points need to be hammered home.
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The Following User Says Thank You to Pithor For This Useful Post:
Badgister (10-29-2015)
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10-29-2015, 09:59 AM #33
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Thanked: 3795Notice that you are the one that brought up HHT3 and HHT4. Notice also that you were giving advice to someone else, and in that advice you chose to give advice regarding how to achieve HHT3.
Nobody ridiculed the HHT, but when you or anyone else projects that arbitrary scale onto others I'm going to point out the problem; and that problem is the arbitrary nature of the the HHT in general and the number scale in the specific. Odds are good that your hair is not the same as my hair and so the manner in which your hair is cut will not be the same as the way that mine is cut. The HHT is an assessment that an INDIVIDUAL honer may or may not choose to use to assess their blades' ability to cut their own hair, but it does not translate in a comparable manner to every other honer.
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10-29-2015, 02:36 PM #34
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10-29-2015, 02:48 PM #35
Are you going to take your undershirt off so we can see the chest hairs?
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10-29-2015, 03:37 PM #36
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Thanked: 315There have been a lot of posts since I last checked this thread and I see some interesting comments. I thought I would respond to a few and give an update on my progress.
As I mentioned before, it turned out it was very light rust that had formed on the blades, not tape residue. So, Pithor hit the nail on the head. Fortunately some very light sanding with 2K took care of it. I've started using 3M tape, so maybe that will help reduce this some in the future. I will try replacing the tape more often too as was suggested earlier.
Dilucot method. I just scanned the article and think I will try that next time. I've already done some of the things recommended when honing, but I may try following the steps closely and see how it works for me.
HHT. It seems to be a good way of testing edges for some people, but it doesn't really work for me, even after stropping. I'm in my 20's and my hair is thinning, so maybe the rest of my hair is getting tougher in order to survive the culling.
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10-30-2015, 10:05 AM #37
I'm glad you got it off the blade. It happened to me a lot in the beginning, and was very frustrating, not in the least because it seemed to coincide with edges that would just refuse to get as sharp as they needed to be. Which brings me to another reason to change tape frequently: tape wears much faster than steel, so if you hone too long with the same bit of tape, the honing angle will slowly decrease, causing the slurry to hardly work at the very apex any more.
If you can get unicot (i.e. the secondary bevel method) to work, I would say go for it. It will be frustrating every now and then, but very rewarding when you nail it.
I find the HHT useful when diluting, but not very necessary when using unicot, as it is pretty fool proof - granted your bevel setting is up to snuff. In the end, it is just one tool. I would say: focus on uniform undercutting of slurry and water along the edge; if I don't get a decent, uniform undercutting on almost clear water, I don't even consider doing a HHT.
Do note that for bevel setting on thicker slurry, observing undercutting is really not very useful, thick slurry is easy to undercut; the (moist) thumb pad test is much more helpful, look for that sticky feeling (and the fear of cutting into your thumb). Good luck and happy honing!Last edited by Pithor; 10-30-2015 at 10:09 AM.
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10-30-2015, 10:23 AM #38
Like I said, the HHT is not the be all and end all of sharpness tests (and was never intended as such) and indeed requires adjustment to accommodate for the variables. However, when a honer has a (relative) uniform strand of hair and has done some shave testing, he can make quite accurate deductions about the level of sharpness along an edge and how they translate to shaving ability (do note that it does not say a thing about shaving comfort).
For instance, I have a uniform strand of hair and if one of those (moist) hairs bobs across the edge right off the coticule (what you would call a HHT1) I know that I can finish that edge on water only and that a good stropping will result in an edge that will shave just fine; not just for me, also for others, as it turns out. If I really push it, I can get those hairs to catch and pop right off the stone. Which means the edge is a bit keener and will shave stubble with (marginally) less effort. It also tends not to last quite as long before needing work; the finer the edge, the more easily it deteriorates.
Do note that I am talking about human hair, from the scalp. Which, compared to stubble, is finer (in general). Ergo, if an edge effortlessly cuts hair, it will cut stubble.
Honing is not a competition, and I agree with you inasmuch as that one honer's HHT3 does not directly translate to some other honer's HHT3. That being said, it is still quite certain that both edges will shave stubble with little effort after a good stropping.
I would not go as far as deeming the scale arbitrary, though: it describes an increasing level of keenness that can be visually observed. What certain keenness readings mean is a different matter. HHT Users have to understand that it does take some tweaking and testing to know what HHT readings mean in their individual case, with their means and manners. It is not a standardised scientific test.
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10-30-2015, 09:55 PM #39
We all have our little indicators to gauge a shaving edge. This of course is calibrated to our own experience with razor, hone and hair of choice. Your findings are unique to yourself and should not be considered universal. But as far as I am concerned that is all that matters. I hone for myself and have no interest in quantifying shaveability of someone else's gear.
Don't drink and shave!
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10-30-2015, 10:03 PM #40
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