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Was not fun to lap. Thin layer dished and convexed in subtle ways. Had to be so careful to not rock the stone during the initial lapping. I couldn't have gotten a better result. The outcome exceeded what I was expecting. Hardness plus using 600 grit helped me control it. Attachment 248102Attachment 248103Attachment 248105Attachment 248104
Still need to sort the bbw and get a clean track. 8 5/8" x 1 13/16"
I have found (YMMV) that the Coticules with inclusions work very well and quickly compared to plain ones. Maybe I have used about twenty Coticules over the years.
~Richard
I think there is more in play with coticules with certain types of inclusions or coloring. Ppl just think garnets, but quartz comes into play I think. The slime green ones have other factors in play as well I think
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Bbw has sort of rusty colored streaks and glitters heavily. I suspect this is going to be fast going by how it has murdered all the sic based abrasives it has touched
Surprisingly it seems dead slow on water. Has crazy, skatey feeling under the blade. Hone feels hard and like a salad of textures but no harm is being done. Will be interesting to test properly. I need to dig up a really soft slurry stone
Can't get the video to load. In your latest post, are you talking about the bbw side? That looks closer to a slate/schisty color to me.... but I am on my phone.
Oops. I will fix that. No it is a natural combo. The coticule is hard and skatey, the bbw feels like.... bbw. Give me a second
I have a hard time getting things to embed here
My own coticule is really hard and burnishes. If yours is equally hard you might need to adjust the honing method to account for it.
When I hone I do it slightly differently to account for that. I build a slurry with a 1K plate. The slurry stones I have don't play nice with my rock.
I'll take a razor to 8K. Then build a light slurry on the coti. Hone until it starts to turn the slurry grey and you can feel the blade getting sticky. I don't thin the slurry at all.
Then I'll clean off the rock and razor and hone again just on water. The rock burnishes in this phase from dull 1K finish. I do this until the blade looses the sticky feeling. When complete the razor feels like it's running on glass and the hone once dried off will be shiny.
The edge comes off the rock polished but failing a HHT at all levels. Feeling sharp for a TNT.
10 laps of crox, 100 on leather. It'll pass a HHT at a 4. The shave however is insanely smooth.
If I have the sort that is glassy and just gets more and more mirrored with use I tend to use it on water only and then go to running water under a tap for even more buffering. Those types tend to give off really sharp edges for cotis.. But I do the heavy lifting with another rock. Sometimes the backing stone with coti slurry if the base stone has enough gas to delete the bevel scratches... Usually I will reach for a quicker but coarser coti though. It will take me awhile to figure out as the feedback seemed so wonky
Tested this with that tongwha 77. A super fine coticule. I went on a different coti for the slurry work and moved to this water only followed by running water. The scratch pattern it left behind was just in a different league altogether and the predecessor is a good stone you can shave comfortably from. A very aggressive hht 5 off the strop root in aboit a half inch from grab point. With my hair that is a zone usually only pure finishers achieve. Forgot to hht it off the rock.
If you are referring to copying and pasting a photo, one of the admins wants everything uniform so he disabled that function ........ if I understood him correctly. Liberal democrat so he knows what is best for everyone.:shrug:Quote:
Originally Posted by kcb5150
