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Second Comparative Nagura Test - Round Two
Hi to all!
Here we are again with the Nagura Test.
This Time I used the sequence Tsushima -> Kiita on my Ozuku Asagi Koppa.
As usual in these tests, I lightly jointed the edge before starting and then made a round each of slurry (Thick -> Thin) with the two Naguras.
For those who have not read the entire thread, the passage with the Tsushima provides a reliable and constant starting point for evaluating the effect of the last Nagura used in the different tests.
The Kiita Tomo, as in the previous test on Nakayama Kiita doesn't seems to be one of the finest, and this time, the edge too wasn't perfect (but quite corrected by the final stropping). Btw. I didn't made another pass to keep the procedures homogeneous in the different test rounds.
The blade passed the Treetop Test.
Today I shaved with it and got a close & quite smooth feeling, followed by a very good post-shave.
ERRATA CORRIGE: THE RAZOR IS LASSO SOLINGEN AND NOT W.POLTGEN
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Second Comparative Nagura Test - Round Three.
Precisely in relation to what Euclid said above, yesterday morning I too thought about the hypothesis of a defect in the base stone, and I had gone over my Ozuku Asagi flattening it with 400 & 800 G sandpaper, to eliminate any problems caused by surface imperfections. Of course, the other possibility, which is that pitting is the cause of a non-perfect edge, unfortunately remains.
Anyway, the third round of Nagura Test seemed to go better (also if still not perfect), either on the microscopic side, and on the shave test. Today, I really didn't felt the blade on my face (albeit very close) and got a top notch post shave.
I used Tsushima Nagura followed by Red Ohira Nagura. The second showed to be one of the less finer nagura (as in previous test on Nakayama Kiita base stone) but, despite that, confirmed to be one of the best performer while shaving.
Btw. I don't think I'm chasing my tail... I'm just collecting data & experience about Nagura's honing on Jnats. :) :)
Love this approach, which drives me to be more and more systematic, to understand my mistakes or limits and to try to overcome them. So far, so good! :)
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Took also a "control" shot of another part of the bevel
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Second Comparative Nagura Test - Round Four.
During another cloudy & grey Sunday I went on with my Nagura Comparative Test.
Round Four used (as usual) the Lasso (Solingen) razor, the Ozuku Asagi Koppa as base stone and the Tsushima as first Nagura, this time followed by the Nakayama Kiita (2) Nagura.
As we can see, the repeated sharpening sequences brought to light (already in round three) a small Pitting spot (not visible at the beginning of this series) which gradually reached the edge of the blade. As you can see, it is very limited in size (and will probably be eliminated by the next round of the test), while the current risk is that the largest Pitting spot, evident from the beginning, will reach the edge soon.
I've included some images with the Microscope's ruler, in order to assess the size of the defects/spots/chips etc. as Euclid suggested.
The Nakayama Kiita's slurry seems to have done a good job (mid-range as finesse in the whole lot of naguras) and the edge is very straight (IMHO), apart for the small chip.
Shave test is scheduled for tomorrow.
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