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Vintage coticule ID

There are no bad Coticules. If the water turns black quickly, that indeed means your stone is cutting rapidly on water.

I agree with dr. Ralfson that you should at least try Unicot a couple of times. It's very easy to reach the desired keenness with Unicot. It also gives you something to aim for when doing Dilucot.

But before anything else, my advice is to spend some time on water with that Fritz Bracht. I have no doubt that you can yet reach more keenness on that razor by working on water. If the Coticule is fast on water, try this regime:
1. 2 sets of 15 halfstrokes. Test with HHT.

2. rinse the razor and the surface of the Coticule and add 30 X-strokes, with a small bit of added pressure. Test with HHT. If there is improvement, even if only at a part of the edge, repeat the same, until you are no longer finding any improvement.

3. rinse the razor and the surface of the Coticule and add 30 X-strokes, with just the weight of the blade. Test with HHT. If there is improvement, even if only at a part of the edge, repeat the same, until you are no longer finding any improvement.

4. rinse the razor and the surface of the Coticule and add 30 X-strokes, with the less pressure than the weight of the blade. Test with HHT. If there is improvement, even if only at a part of the edge, repeat the same, until you are no longer finding any improvement.

5. If you are not yet passing HHT-3 well, strop 30 laps on the Coticule (normal pressure) and make 4 ultra light X-strokes. Again, if you see any improvement, repeat.


This is a bit of work, but it will give you a feel for your Coticule, what kind of pressure it likes, how it develops keenness.
I repeat. There are no bad Coticules, there are just people who get the best out of their Coticule and people who don't.

Kind regards,
Bart.
 
Thank you, gents, I was away for couple of days but last night I try your suggestion, mr Bart.
I can't get a edge from this coticule on my Dovo, so I did it on my other vintage coticule.
Went pretty easy to a HHT3 before stropping, and I had an amaizing shave this morning, the first
coticule felling. Right now I understand what you gents are after : a butterly felling , not so close but very forgiving, if I can make all my razors do the same like my Dovo, I am very happy,
I won't need any more hones.So this was my first dilucot shave ready.
Now about this particular stone, I don't know, even the unicot it can't give me an edge.
I try it on two Sheffield razors, and with Unicot they are not shave ready. I don't know ,it is fast on slurry, and when just wit water, the water became filed with some black suspensions(steel?). But I can't have an edge at all. Please give me more suggestions.
But all in all : a very confortable shaving I discover from old stone.
Thank you again
Livio
 
It's hard to tell what's going wrong without being able to try that Coticule myself.
I have 2 suggestions for you:

1. Next time you try this Coticule, finish under a running tap. The smallest possible stream suffices. Let it run on the end of the stone, and tilt it a bit to the other side, so that the water constantly rinses the stone.

2. Use the other Coticule for Unicot, but do the last step (30 laps on water with taped spine) on this one. To be absolutely sure, do this under a running tap as well. If the edge is good, then you know that the stone is capable. Should it fail, leave the tape on and refinish on your "good" Coticule. If the edge is good now, refinish one last time on the "bad" Coticule, if only to confirm that it does reduce the keenness of the edge. (It would surprise me)

Kind regards,
Bart
 
Thank you, Mr Bart. I folowed your advices, and even on the dilucot this coticule give me a nice keen edge.I keep it under running water and I did just 20 very soft X strokes. On other razor with unicot , after I did all the steps on the other stone, last step 30x strokes on this stone, and I have a good HHT 3 before stropping.I try it with other razors also, I found out the Sheffield razors need just 20 X strokes for finishing, but one Heljestrand MK32 need
more than 40 , I think is the steel.Like you said , I have to play with the stone more to find out what is capable. Thank you again, and I will post more experiences with my coticules. BTW
I generate slurry rubbing the two coticule.Is this OK? I tried also 10 pases on ChromiumOxide,but I found no difference in shaving comfort, maybe just better HHT.
Warm regards
Livio
 
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