It's the new backing, instead of the schist. I taught the ridge in the middle would be beneficial while handhoning. It's masurbjörk, not sure what it translates to in English. It's Birch anyhow. Fibres going all directions.
Coticule love... show off your rock
- Thread starter Drybonz
- Start date
Latin name is Betula pendula var. carelica
timwcic
"Look what I found"
I pictured this stone earlier and has turned out to be quite the little Easter egg. A lot packed into 5 x 2.5 inches. As I lapped, every rinse exposed more of a beautiful swirled, fingered surface. It is a hard stone, not L. L. OMG where is the SIC hard, but it took some effort to get flat. As I progressed with finer grit, the stone started to burnish into a glassy reflective surface. That’s nice. Cleaning up the sides exposed a turbulent transition line. Even the BBW is not typically boring, finishing off with a smooth reflective surface and a striking pink inclusion running across the width. It is not a drop down of the coti, it is independent all to its own. As they say in infomercials, “But wait,—-there's more!”. On one of the sides, two features I never ran into on a coticule before. With all the turbulence, there are bright white layers?? or veins?? transecting the transition. It’s in the stone, I can feel them all with my finger nail. There are also several bright green orbs in the BBW. Two I circled in a picture. My cell does not pick up the color, but picks up the orbs. Not big, the size of large, plump grains of rice. There are several of these unexpected features. Guessing layers sometimes is a fools errand but this rock as a lot of characteristics for a La Petite Blanche. Only used on a few blades, so still learning it, but will be a low learning curve. It is a hard stone under steel. It is running on the fast side. Refreshed some tugggers in short order. Very slow to auto slurry and under running water, has a very slight gritty feel with a glassy feedback. This is a keeper and a lucky to find in the wild stone
Looks like a synthetic coticule to me which from what I hear makes a great finisher on the softer side. Very slow from what I hear, try taking a finished razor to it under running water and see what happens
Christian, could a synthetic Coticule have the manganese lines running through it. That line is not a crack. I have attached a few close up phone picks of the line that is running through this stone. There are actual two lines like this. It is smooth as a babies *** after lapping and I cannot pick out any crack with my fingernail.
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Synthetic would not have Magnese. Everything about the stone is giving me synthetic vibe. I have seen synthetic in the past have dark lines from crack/dirt but doesn't look like that on your stone. Maybe you have an insanely kosher (just being pure, vein I don't have a good guess off top od my head) coticule?
Feel like the speed of the stone will help solve the mystery
Feel like the speed of the stone will help solve the mystery
timwcic
"Look what I found"
This Coti were rescued by me last week. It was part of a lot that I felt were to worthy to remain unloved week after week. I always get the jump in heart rate when I see a wild Coti but get a extra few beats when I see a natural. I forgot to take a before picture, so using the as found group shot. A 7 x 1 1/2 inch stone that was heavily covered in funk when found. It took a good bath and cleaned up nicely. A lot of personality to this stone starting with the funky swirled surface. It has the feel of grit while honing under water. Might not me a high end finisher, but definitely a pre finish stone or a workhouse with slurry. Will have to use more to learn what it is capable of
timwcic
"Look what I found"
Nice stone. Looks to me, IMHO, 100% natural. Very meatly, enough Coti to last several lifetimes. Tall order to ID a glued stone
Oddly enough, sometimes they do. If you do an image search for syhthetic coticule you will see a few more like yours. It may not be manganese but somehow those lines can form. Bad news is its a synth, good news is they are good stones and usually good finishers
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Its not a coticle. It is a manmade razor hone and there are several threads on them. Put a drop of phosphoric acid on the top of the hone and if it bubbles it is not a coticule.
I don't have any phosphoric acid, so I tried vinegar last evening. I did not see much action, resembled water on the surface. Don't know if that is too week of an acid?
Let me try vinegar on one of my synth cotis and see what happens. Give me a few....
It looks like a synth coticule to me. They all have backings in ratios like that, but beyond that, there are thsoe flecks in the surface many of them seem to have. What was the odor when lapping?
A few tiny air bubbles formed on the synth and the real coti on the right stayed perfectly clear.
See how the synth absorbs the vinegar when you wipe it off? Cotis don't do that.
Too weak but if you look at some other cleaners you have they may contain it. Draino and similar do if I am not mistaken
Yeah, like David said. It's a synth coticule. IMHO they can actually be nicer than your avg natural coti for finishing and are probably the single most undervalued option for razor finishers out there right now (They sell under $50 for small sizes typically)... and 7x2" is a very large example.
No clue how, but yes, they do on occasion have those lines that look like manganese. My best guess is the manufacturers had a material to fill gaps and cracks that developed during making those hones that they designed to look like manganese.
Here's the reaction of mine with 10kt gold tester solution (nitric acid)
Tested up to Aqua regia on my synths. ~1/2 of them react.
Aurora (obvious synth) doesn't. Panama hone (synth both sides) doesn't on either side. And an orange synth I suspect is a sintered ceramic-type stone doesn't. A Frictionite-type doesn't (either side) and a Carborundum doesn't.
Most swaty types react, reform cotis and reform thuris react, And a grey synth I thought was the same type as the orange that didn't react, did react.
No clue how, but yes, they do on occasion have those lines that look like manganese. My best guess is the manufacturers had a material to fill gaps and cracks that developed during making those hones that they designed to look like manganese.
Here's the reaction of mine with 10kt gold tester solution (nitric acid)
Tested up to Aqua regia on my synths. ~1/2 of them react.
Aurora (obvious synth) doesn't. Panama hone (synth both sides) doesn't on either side. And an orange synth I suspect is a sintered ceramic-type stone doesn't. A Frictionite-type doesn't (either side) and a Carborundum doesn't.
Most swaty types react, reform cotis and reform thuris react, And a grey synth I thought was the same type as the orange that didn't react, did react.
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