Thread: Video: Coticlue Speed Test

Originally Posted by Pithor

I am strongly of the opinion that the difference in speed between coticules is least noticeable on water only. I have only found a few that have any considerable sharpening effect on a razor's edge while using medium to low pressure. Creamy Les Latneuses and La petite Blanche come to mind, and even those do not have too much of an impact in that department either.

I think that you are right, how hard or soft the stone is has a lot to do with the speed here, in the case of the La Veinette in the video it is very soft coticule that auto-slurry a lot, but it has a lot of cutting power (maybe higher Garnet content) also the vintage barber hone after 10 laps you see the swirf increasing noticeably.

if you check the videos on my channel you will find that same La Veinette is used to hone a razor with light pressure on water, you will hardly see the swirf on it.

Originally Posted by AljuwaiedAK

I think that you are right, how hard or soft the stone is has a lot to do with the speed here, in the case of the La Veinette in the video it is very soft coticule that auto-slurry a lot, but it has a lot of cutting power (maybe higher Garnet content) also the vintage barber hone after 10 laps you see the swirf increasing noticeably.

Aljwaied

Excellent video, and using the same knife speeds up the visual results for us to see. Honing and making speed tests with razors is more difficult because the amount of steel being removed is not easily seen on the stone after just 10 or 20 light pressure strokes unless you have a microscope. With some stones or some razors you can see the beginning of a black steel swarf residue but with knives so much more is created. I don't want to switch your thread away from Cocitules, but here is a Jnat video I made with a heavier plane blade that shows some of the same results.

Originally Posted by alx

Aljwaied

Excellent video, and using the same knife speeds up the visual results for us to see. Honing and making speed tests with razors is more difficult because the amount of steel being removed is not easily seen on the stone after just 10 or 20 light pressure strokes unless you have a microscope. With some stones or some razors you can see the beginning of a black steel swarf residue but with knives so much more is created. I don't want to switch your thread away from Cocitules, but here is a Jnat video I made with a heavier plane blade that shows some of the same results.

Thanks Alex, indeed it is difficult to spot the difference between the stones using a razor; that's why I used the knife here. And thank you for the demonstration too, the magnificent stone you have used in your video shows both far ends of stones hardness, from almost pure swarf to a heavy mixture of swarf and slurry which is really extraordinary for one stone. In my case the 4.. La Veinette shows that heavy mixture, 2. The Vintage Combo shows the middle stage were you have a mixture but it's on the darker side, and the 5. Hybrid had almost a pure swarf on it only.

Thanks for taking the time for making the video it help a lot in explaining my point.

Im impresed with the Latheuses - the 2 stones , but the rectangular is a pretious . Maybe real coty finisher