RocknCritter
spending too much on rocks
Member since November 2008
Posts: 489
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Post by RocknCritter on Mar 26, 2009 21:21:18 GMT -5
When I saw this cab I was mesmerized. The picture doesn't do justice to the deep, rich black color. After selling more of my stuff, I couldn't resist and bought it. The seller acquired it this year in Tucson but didn't know much about it. Supposedly, it was created by someone in Oregon. The relief is so small there is no way it is carved. The only technique we could imagine was some type of acid etching. The stone is probably black onyx. So any ideas how this was done?
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Post by johnjsgems on Mar 26, 2009 21:35:35 GMT -5
Maybe laser?
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Post by akansan on Mar 26, 2009 22:44:25 GMT -5
Is the pattern raised, same level, or engraved? It kinda looks like it's polished while the base of the stone isn't. If that's the case, I'd go with acid etching on the rest of the stone, leaving the pattern covered during the process.
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dscratch
starting to spend too much on rocks
Member since June 2008
Posts: 214
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Post by dscratch on Mar 26, 2009 23:07:30 GMT -5
I'd have to guess it was made using a laser or sand blasting process, but it's only a guess. That does look nice.
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Post by mohs on Mar 26, 2009 23:24:41 GMT -5
Those are are excellent answers above ! I wonder what does it mean? is it a handwriting, signature ect...?
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Saskrock
fully equipped rock polisher
Member since October 2007
Posts: 1,852
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Post by Saskrock on Mar 26, 2009 23:39:48 GMT -5
Looks like sand blasting to me. I have done stuff like that on glass. If it is the pattern will be slightly higher.
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Post by akansan on Mar 27, 2009 10:21:11 GMT -5
I always forget about sandblasting! I've acid etched on glass before, so followed that path...
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MikeS
fully equipped rock polisher
Member since January 2009
Posts: 1,081
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Post by MikeS on Mar 27, 2009 11:09:24 GMT -5
I'd guess acid etching too, if for no other reason than it would be a lot easier and more accessable to the average hobbyist....
Another possible way to pull that off would be to completely polish the cab, put a strong epoxy on the areas you want to remain polished. and then run the cab through a 220 or 500 grit vibe cycle... I bet that would give you similar results...
Mike
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RocknCritter
spending too much on rocks
Member since November 2008
Posts: 489
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Post by RocknCritter on Apr 4, 2009 9:16:22 GMT -5
The more I look into this, the more I think this design was created using etch resist film. This is a material used in glass etching.
I learned the other day the design is based upon an ancient petroglyph. The translation is "The admirer of this stone has a head full of rocks".
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Post by stonesthatrock on Apr 4, 2009 9:26:08 GMT -5
that is very cool looking. i often wonderned it you could do the glass etching on stones.
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agatemaggot
Cave Dweller
Member since August 2006
Posts: 2,195
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Post by agatemaggot on Apr 4, 2009 12:10:48 GMT -5
My guess would be the stone was covered with a stick on type of rubber or plastic sheet. The pattern was then cut with a swivel type knife and then the piece was glass bead blasted. I did this type of thing using a thick plastic sticky backed tape similar to electricians tape and if I remember right I bought it thru Mc- Master- Carr in Chicago. The end result is Wayyy cool !
Harley
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RocknCritter
spending too much on rocks
Member since November 2008
Posts: 489
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Post by RocknCritter on Sept 26, 2009 9:29:59 GMT -5
Well, it's a small world. Last week at the Denver Gem & Mineral shows I was checking out a display of some really nice cabs. After looking at what I thought was everything, I started to walk away. However in one of those moments of indecision I decided to do a 180 and see everything on the other side of the exhibit hall. So I walked back by the booth with the cabs. In one upper corner there's a whole display of black etched cabs that catches my attention. Eureka! They're all similar and nearly identical to my cab. The same black material. The same style of intricate etching patterns. The woman in the booth is named Lisette Thierry. She very kindly explains that she cut them from black onyx and etch resist film. Not only is she the cab cutter, she normally doesn't work the trade shows. So in one of those little coincidences in life I get to meet the artist and learn about a new technique. Since I bought the cab I've been really intriqued by this piece. Now I can sleep a little easier
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Post by moondragon on Sept 26, 2009 9:38:45 GMT -5
What a cool idea:) I really like this idea:) Hears the squirrel in her head start to run on the exercise wheel:)
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