Thread: Belgian "Deep Rock" Hone

Originally Posted by randydance062449

During a google session on garnets one of the things stated is that temperature will affect the hardness of a garnet. Part of the process of depostit formation is being buried underground for a long time where there is a high temperature. Perhaps the temperature varied at different depths? Perhaps enough to effect the ability of a garnet to splinter?
perhaps the composition of the binding material varies enough to affect the release of the garnets?

Lots of variables with no firm answers.

Russel.... I have seen the blurring in other coticules as well.

Not true. Garnet is Garnet. Garnets range in hardness from 6.5-7.5 on the Mohs scale and temperature has zilch to do with it. It depends on the type of Garnet. Garnet comes in quite a few variations depending on the chemical makeup. It would be really rare to find two different varieties together.



Mineral Composition Specific Gravity Hardness Colors
Almandine Fe3Al2(SiO4)3 4.20 7 - 7.5 red, brown
Pyrope Mg3Al2(SiO4)3 3.56 7 - 7.5 red to purple
Spessartine Mn3Al2(SiO4)3 4.18 6.5 - 7.5 orange to red to brown
Andradite Ca3Fe2(SiO4)3 3.90 6.5 - 7 green, yellow, black
Grossular Ca3Al2(SiO4)3 3.57 6.5 - 7.5 green, yellow, red, pink, clear
Uvarovite Ca3Cr2(SiO4)3 3.85 6.5 - 7 green

Originally Posted by Utopian

I would suggest that you figure out this stone before buying another one.

I think the key words, are "figure out". I haven't played with as many coticules as Ron, but I have never had a bad coticule. Some are just easier to figure out than others.

Originally Posted by Badgister

I think the key words, are "figure out". I haven't played with as many coticules as Ron, but I have never had a bad coticule. Some are just easier to figure out than others.

I wish I kept mine. I would have sent it to you. Slow as anything on slurry. 100+ strokes and just a faint gray would appear. Then it's finished edges were mediocre. I spent 6 months on this even Unicot edges were meh. Pully but no irritation.

I don't think it was a bad coticule, just not right for me. Maybe this is the reason people search for a stone with properties they like. Slow on slurry and mediocre finishing wasn't for me.

Originally Posted by Jerryung

Newbie here. Do anyone of you veteran honers know the best way to get the most out of these deep rock coticules? I tried to slurry mine but it hardly gives up slurry. When it does slurry, the result of shaving off slurry is rather rough even with stropping. I also tried water only on the deep rock, but my razor wasn't as keen as with the coticule I got directly from Ardennes. Off the deep rock coticule, the razor barely passes any hanging hair test. If it does, it makes a loud twang cutting the hair. On the other hand, with the stone from Ardennes my razor passes the hanging hair test each time off of just water, around 30-50 stroke and strop with minimal effort. And do you guys know if these deep rock coticules are similar to the BARBERS SPECIAL BELGIAN RAZOR HONEs I see on Ebay? They look very similar. If the barber's special coticule is way better I'll try to get that one to try. Thanks.

Jerry

I wish I had a stone that would make my HHT have a 'loud twang' !

I've had labelled Old Rock, and Deep Rock hones. I don't think that label makes it 'better' than an unlabeled hone. You pays your money, and you takes your chances. If you are getting good results with the Ardennes coticule I guess, even though you are a new honer, you must have some skills.

I wouldn't give up on that Deep Rock yet, but I'd put it away for a time. When you feel like you're really 'good' at honing revisit the Deep Rock and see if it doesn't work better for you. Might or might not, but I wouldn't get rid of it too soon.

Thanks guys. I'll keep trying on the deep rock coticule and fall back on the Ardennes coticule if all else fails.

Have a great evening,

Jerry