Hand Tools Archive

Subject:
Coticules - Fine and Coarse *PIC*

David Weaver
First, the coarse coticule - these are a cream colored belgian stone with natural garnet articles in them - their boast is that the particles are round and more gentle (at least that's how they're framed for razors).

At one point, 7 companies were mining these as they also come with belgian blue stone mining. The blue and yellow seams meet and the combination is a natural yellow stone (unstable) with a blue stone backing (stable).

Now, one company mines them and for the price, they're not worth the hassle. They are all massively different from one to the next, though "select" grade stones are fine enough for finishing edges. But they could be fast or slow, you'll never know, and a large bench stone size will be less fine than an oilstone and could cost $300.

The first coarse stone is fast enough that it could be used for woodworking, but it's size is only about 2.75" x 5.5" and it's sort of irregular. Even this size is $100. I'll spare everyone the nuances that make it worth having one for razors.

notice how shallow the grooves are from the round particles. you can actually see the bottoms of some of the grooves, which isn't common in short field of depth. This stone blackens swarf quickly. Maybe the fastest of these I've had (out of about 15).

The large articles still slurry dull the edge a little bit.

And next is a fine coticule - this is an older stone of mine. It's extremely slow, which is useful for razors, but only after another finish stone. worthless for woodworking.

notice the slurry dulling is less, but still not a great combination for use.

George stocked this at CW because there were a few european tradesmen who used them. They spit on them (they can be used with water or oil, but most are used with water now - oil is a good way to see if a crappy one will do better on oil than water, and it doesn't go deeply into them as they're not porous).

Fun fact, showing a label that said "with water or oil" on a vintage coticule and stating that using oil on them is fine could get you banned from a shaving forum that I was on because one of the moderators said at one point they couldn't be used with oil (he didn't feel obligated to learn whether or not that was true) and maintained that it would be the rule by banning anyone who said otherwise.

Messages In This Thread

Sharpening Stone Ominbus - here we go
White Cretan - Novaculite *PIC*
stone pics... *PIC*
Black Sedimentary Stone *PIC*
pic of the stone *PIC*
Norton Queer Creek *PIC*
Pic of the stone *PIC*
Re: Pic of the stone
Re: Pic of the stone *PIC*
Purple Welsh Slate *PIC*
edge picture with a razor *PIC*
Very dense....
Re: Purple Welsh Slate *PIC*
Owyhee Jasper *PIC*
picture of the stone *PIC*
Chinese Agate *PIC*
Pic of the stone *PIC*
crest complete (And more dursol) *PIC*
Re: crest complete (And more dursol)
Re: crest complete (And more dursol)
Re: crest complete (And more dursol)
separate, since you got caught in the net...
Re: separate, since you got caught in the net...
Re: separate, since you got caught in the net...
Re: separate, since you got caught in the net...
Wrong R
Greasy/Coated India Stone *PIC*
Re: Greasy/Coated India Stone *PIC*
Gray China (Guangxhi?) natural waterstone *PIC*
pic of the stone *PIC*
Linde A - Paraffin Buffing Bar *PIC*
Try bee wax
Fine buffing compound
practically...
one other side benefit
Also with iron oxide bar
Picture of the "stone" *PIC*
The real Llyn Idwall *PIC*
Picture of the stone *PIC*
Re: Picture of the stone
Re: Picture of the stone
Re: Picture of the stone
two llyn idwalls
Re: two llyn idwalls
Re: Picture of the stone
Re: Picture of the stone
Re: Picture of the stone
Black Hone Slate *PIC*
pic of the stone *PIC*
Smiths Hard Arkansas *PIC*
pictures of the stone *PIC*
Re: Smiths Hard Arkansas
Re: Smiths Hard Arkansas
Japanese "Barber Oilstone" *PIC*
Pictures of the stone *PIC*
Slurried Trans Ark.. *PIC*
Am I understanding......
Re: Am I understanding......
This is sort of a loaded situation...
Re: This is sort of a loaded situation...
The other real issue with japanese finishers..
Re: This is sort of a loaded situation...
Re: This is sort of a loaded situation...
Re: This is sort of a loaded situation...
Re: This is sort of a loaded situation...
Re: This is sort of a loaded situation...
Clarifying hollow grind
Re: This is sort of a loaded situation...
dan's and washita.
Re: This is sort of a loaded situation...
Soft India?
soft vs. hard
Re: Soft India?
Now I am more confused
Re: I will make an exception…
Separately - a very good point made
Not defending wiley...
Re: Now I am more confused
Re: Now I am more confused
That explanation makes sense *NM*
Re: Am I understanding......
Picture of the stone *PIC*
Extra Fine India Stone *PIC*
Picture of the stone *PIC*
Sigma Power 13k *PIC*
Re: Sigma Power 13k
Re: Sigma Power 13k
Re: Sigma Power 13k
Re: Sigma Power 13k
Re: Sigma Power 13k
Re: Sigma Power 13k
Re: Sigma Power 13k
Re: Sigma Power 13k
Pic of the stone *PIC*
Re: Pic of the stone *PIC*
The rules of accommodation
Re: The rules of accommodation
Re: The rules of accommodation
Re: Pic of the stone
Re: Pic of the stone
Jackson Lea 5 micron "yellowcake" on softwood *PIC*
Is poplar soft enough
Re: Is poplar soft enough
picture of the wax bar *PIC*
Llyn Idwall *PIC*
Re: Llyn Idwall
Re: Llyn Idwall
Charnley Forest
releasing particles
Turkish Oilstone *PIC*
pic of the stone *PIC*
Dursol (Autosol) Metal Polish *PIC*
Tying up loose polishes - Autosol *PIC*
Re: Tying up loose polishes - Autosol
pic of the dursol *PIC*
(this one is good enough for everyone)
Re: (this one is good enough for everyone)
Re: (this one is good enough for everyone)
Re: (this one is good enough for everyone)
Re: (this one is good enough for everyone)
LV Green / Formax Microfine *PIC*
picture of the compound *PIC*
attractive old wives tales
Relevance? Question?
Re: Relevance? Question?
Clear summary thanks
Another White Alundum Japanese Stone *PIC*
Re: Another White Alundum Japanese Stone *PIC*
Very expensive (to me) japanese natural *PIC*
pic of the stone *PIC*
Re: Very expensive (to me) japanese natural
Dan's black Hard Ark *PIC*
pic of the stone *PIC*
Coticules - Fine and Coarse *PIC*
pic of the stones *PIC*
garnet
not sure
Unknown Japanese White Alundum *PIC*
the stone.. *PIC*
question
Looking at this picture..
I do both
Hand American 0.5 micron Green Chrome Ox *PIC*
pic of the oxide *PIC*
The purpose of the omnibus...
Not unicorn related, more clear
What else the creator of the weaver bevel post? *NM*
question for David
Re: question for David
Thanks David *NM*
Supremely Fine Japanese Natural Razor Stone *PIC*
Picture of the stone *PIC*
Re: Picture of the stone
Re: Picture of the stone
Re: Thank you, David
Re: Thank you, David
very few will care about mines or stamps...
Practical question
Re: Practical question + another regarding scale..
Re: Practical question + another regarding scale..
Scale overlay
Re: Scale overlay
sorry, addressed differently
request
Brief comments...
Re: Practical question
Re: Practical question
Fine White Okudo Suita *PIC*
Picture of the stone *PIC*
Shapton Cream *PIC*
Pic of the stone *PIC*
Fine washita *PIC*
Pic of the stone *PIC*
Kitayama waterstone *PIC*
Re: Kitayama waterstone *PIC*
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