nozh2002
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This is test posted on Guns.ru by Taledo just recently.
http://talks.guns.ru/forummessage/97/348338.html
Bulat is still rare in US and I think it is very interesting to see how it performs against Finnish carbon steel. It looks like bulat (wootz) now regular business in Russia...
"In the test participated: Anssi finnish carbon blade from knife made by Bellera, which inflicted crushing defeat to soft Damascus steel on the past test (http://talks.guns.ru/forummessage/97/339676.html), and chromium Bulat (Damascus steel) from Victor Kuznetsov and Igor. Pampukha. The latter uses Aleksey Melnitskiy on his Finns (Pukkoes).
Pampukha sad several years ago he smelted this bulat and gave it to test to Aleksey. After returning from his journeys in the White Sea, he was in the complete enthusiasm: it cuts amazing and easy to sharpen, and keep edge well, on top of that not corroding. Always make this one for me - said Aleksey! Well, and I am making, modestly finished his story Igor Pampukha. After such a story I completely forgot to ask for composition...
But chromium bulat from Kuznetsov is such: carbon 1,75%, chromium 5%, hardness 56-58. Pattern: vertical small filaments with length into the centimeter, that slip down from the middle of spine to the edge. Pampukha bulat has no visible pattern. Victor began to melt chromium bulat, at least this type, recently, after being disappointed in soft bulats cut of solid materials.
This blade I acquired on the varnishing day in the past month for 5 thousand rubles. The Finn of Aleksei Melnitsky was acquired year ago on the "Arsenal" (knife show in Moscow) for 9 thousand rubles. Last one was entire in the goose fat, the terrible notches and the specks of rust - “This one not for sale", said master - "This from the crash-test" it dressed 20 geese right on the stones. "Twenty-four hours in salt water!" he stated. How could I resist after sucha a romantic story!
I used this Puukko in the march
http://talks.guns.ru/forummessage/97/344946.html
and was quite happy with it, especially I noticed it cut well even on thick and hard fish bones.
The Finn from Melnitsky was substantially resharpened for the test in order to approach under the rigid standard of Anssi blades: the thickness of 1mm in 4 mm from very edge. Thickness in edge - 0,12mm. It was not necessary to substantially resharpen Kuznetsov edge. With the thickness in 4 mm and the height in 28 mm it was brought on 0.2 mm. the thickness of Melnitsky spine - 4 mm, the thickest part of the diamond-shaped section of Anssi is also 4 mm.
Final sharpening of all knives: water stone 3000, leather belt with diamond paste 5/7. Edge angle - 34 degrees. Shave easily with the popping hairs. Easiest to sharpen was Pampukha bulat more difficult were Kuznetsov and Anssi. Edge was controlled by 20 multiple magnifiers.
Test on the thread by method of Vassili gave starting number around 250g. In order to avoid the influence of the tension of thread it tested without the interference in the adaptation “tower”.
To make test more representative I also include Anssi blade with manufacturer edge - untouched. I cut kapron rope on the floor scales to see how much force needed to cut:
In the table I put reading from floor scales (kg) after number of cuts for each blade (Ansii1, Ansii2, Kuznetsov's bulat, Pampukha's bulat):
Inspection RK in the process of test showed the following changes:
Anssi - formation of burr, especially strong after 1000 cuts.
Kuznetsov - chippings, seen in the edge near the handle even with the naked eye. The fact is that in handle Kuznetsov usually makes biconcave lens for an increase in the effectiveness in the planing. It fell on the part of the edge affected by testing, made its excessively thin and as the consequence - brittle. This, in my view, make Viktor 's butla fall bit behind Pampukha's bulat.
Pampukha's bulat shows little small chippings. Those teeth of chippings in comparison to Kuznetsov's bulat chippings were like a hack-saw to a pad saw. Chippings on the edge of the Pampukha blade were very uniform. In Kuznetsov's they were more chaotic. The zone of comfortable cut concludes in the region 15 kg. It is possible to cut further, but on this test material - this will be too painful. Therefore 15 kg. were undertaken the point of blunting. Anssi1 with the manufacturer edge was withdrawn from the testing after 900 cuts because of the shortage of test material.
Damascus steel blades are approximately identical and exceed Anssi blades on the aggressiveness, ease of cut and wear resistance twice.
Rope was cut in one pass. All cuts were made for one motion. In two days were cut 132 meters of the kapron rope with a diameter of 10 mm.
"
Thanks Vassili.
http://talks.guns.ru/forummessage/97/348338.html
Bulat is still rare in US and I think it is very interesting to see how it performs against Finnish carbon steel. It looks like bulat (wootz) now regular business in Russia...
"In the test participated: Anssi finnish carbon blade from knife made by Bellera, which inflicted crushing defeat to soft Damascus steel on the past test (http://talks.guns.ru/forummessage/97/339676.html), and chromium Bulat (Damascus steel) from Victor Kuznetsov and Igor. Pampukha. The latter uses Aleksey Melnitskiy on his Finns (Pukkoes).
Pampukha sad several years ago he smelted this bulat and gave it to test to Aleksey. After returning from his journeys in the White Sea, he was in the complete enthusiasm: it cuts amazing and easy to sharpen, and keep edge well, on top of that not corroding. Always make this one for me - said Aleksey! Well, and I am making, modestly finished his story Igor Pampukha. After such a story I completely forgot to ask for composition...
But chromium bulat from Kuznetsov is such: carbon 1,75%, chromium 5%, hardness 56-58. Pattern: vertical small filaments with length into the centimeter, that slip down from the middle of spine to the edge. Pampukha bulat has no visible pattern. Victor began to melt chromium bulat, at least this type, recently, after being disappointed in soft bulats cut of solid materials.
This blade I acquired on the varnishing day in the past month for 5 thousand rubles. The Finn of Aleksei Melnitsky was acquired year ago on the "Arsenal" (knife show in Moscow) for 9 thousand rubles. Last one was entire in the goose fat, the terrible notches and the specks of rust - “This one not for sale", said master - "This from the crash-test" it dressed 20 geese right on the stones. "Twenty-four hours in salt water!" he stated. How could I resist after sucha a romantic story!
I used this Puukko in the march
http://talks.guns.ru/forummessage/97/344946.html
and was quite happy with it, especially I noticed it cut well even on thick and hard fish bones.
The Finn from Melnitsky was substantially resharpened for the test in order to approach under the rigid standard of Anssi blades: the thickness of 1mm in 4 mm from very edge. Thickness in edge - 0,12mm. It was not necessary to substantially resharpen Kuznetsov edge. With the thickness in 4 mm and the height in 28 mm it was brought on 0.2 mm. the thickness of Melnitsky spine - 4 mm, the thickest part of the diamond-shaped section of Anssi is also 4 mm.
Final sharpening of all knives: water stone 3000, leather belt with diamond paste 5/7. Edge angle - 34 degrees. Shave easily with the popping hairs. Easiest to sharpen was Pampukha bulat more difficult were Kuznetsov and Anssi. Edge was controlled by 20 multiple magnifiers.
Test on the thread by method of Vassili gave starting number around 250g. In order to avoid the influence of the tension of thread it tested without the interference in the adaptation “tower”.
To make test more representative I also include Anssi blade with manufacturer edge - untouched. I cut kapron rope on the floor scales to see how much force needed to cut:
In the table I put reading from floor scales (kg) after number of cuts for each blade (Ansii1, Ansii2, Kuznetsov's bulat, Pampukha's bulat):
Inspection RK in the process of test showed the following changes:
Anssi - formation of burr, especially strong after 1000 cuts.
Kuznetsov - chippings, seen in the edge near the handle even with the naked eye. The fact is that in handle Kuznetsov usually makes biconcave lens for an increase in the effectiveness in the planing. It fell on the part of the edge affected by testing, made its excessively thin and as the consequence - brittle. This, in my view, make Viktor 's butla fall bit behind Pampukha's bulat.
Pampukha's bulat shows little small chippings. Those teeth of chippings in comparison to Kuznetsov's bulat chippings were like a hack-saw to a pad saw. Chippings on the edge of the Pampukha blade were very uniform. In Kuznetsov's they were more chaotic. The zone of comfortable cut concludes in the region 15 kg. It is possible to cut further, but on this test material - this will be too painful. Therefore 15 kg. were undertaken the point of blunting. Anssi1 with the manufacturer edge was withdrawn from the testing after 900 cuts because of the shortage of test material.
Damascus steel blades are approximately identical and exceed Anssi blades on the aggressiveness, ease of cut and wear resistance twice.
Rope was cut in one pass. All cuts were made for one motion. In two days were cut 132 meters of the kapron rope with a diameter of 10 mm.
Thanks Vassili.
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