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Post by holajonathan on Nov 29, 2021 12:10:05 GMT -5
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lunker
Cave Dweller 
Member since April 2021
Posts: 430
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Post by lunker on Nov 29, 2021 20:20:08 GMT -5
That's some awesome talent on display. Very nice job
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Post by jasoninsd on Nov 29, 2021 20:21:17 GMT -5
I think I remember that slab...but maybe I'm remembering wrong.
All the cabs are fantastically done Jonathan! Well done with regards to the double-domed cabs.
That first Montana agate is the cream of the crop in this batch! The polish is amazing...the shape is amazing...the pattern capture is amazing. All the Montanas are fantastic, but that first one "dropped the mic"!
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Post by holajonathan on Nov 29, 2021 20:55:46 GMT -5
That's some awesome talent on display. Very nice job You've got something like Montana agate radar, don't you?  |
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Post by holajonathan on Nov 29, 2021 21:02:15 GMT -5
I think I remember that slab...but maybe I'm remembering wrong. All the cabs are fantastically done Jonathan! Well done with regards to the double-domed cabs. That first Montana agate is the cream of the crop in this batch! The polish is amazing...the shape is amazing...the pattern capture is amazing. All the Montanas are fantastic, but that first one "dropped the mic"! Thanks, Jason. I'm glad the first Montana turned out since I have way too much time invested into it. The first time I thought I was almost done with it, I heated it up too much with the cerium oxide buff polish and it cooked white spots into the surface of the cab. It's hard to explain what happened, but the clear agate turned white in spots. Not pretty. The only way to save it was to go all the way back to the 220 hard wheel and grind out something like 0.5mm from the whole face of the cab, and then run through all the wheels again. That happened with cerium on felt. I switched to cerium on rawhide and it doesn't seem to heat up near as much. |
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Post by jasoninsd on Nov 29, 2021 21:06:18 GMT -5
I think I remember that slab...but maybe I'm remembering wrong. All the cabs are fantastically done Jonathan! Well done with regards to the double-domed cabs. That first Montana agate is the cream of the crop in this batch! The polish is amazing...the shape is amazing...the pattern capture is amazing. All the Montanas are fantastic, but that first one "dropped the mic"! Thanks, Jason. I'm glad the first Montana turned out since I have way too much time invested into it. The first time I thought I was almost done with it, I heated it up too much with the cerium oxide buff polish and it cooked white spots into the surface of the cab. It's hard to explain what happened, but the clear agate turned white in spots. Not pretty. The only way to save it was to go all the way back to the 220 hard wheel and grind out something like 0.5mm from the whole face of the cab, and then run through all the wheels again. That happened with cerium on felt. I switched to cerium on rawhide and it doesn't seem to heat up near as much. Well, it sucks that happened...but boy did it turn out spectacular! That's interesting about the felt. The last Montana I did, I know it got scorching hot on the felt with 14k diamond paste...without that issue happening. |
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Post by knave on Nov 29, 2021 21:06:43 GMT -5
That CL slab is gorgeous and made some wonderful cabs.
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Post by perkins17 on Nov 29, 2021 21:09:17 GMT -5
Awesome cabs! I love them all, but I think Montana #4 is my favorite.
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Post by holajonathan on Nov 29, 2021 21:11:03 GMT -5
Thanks, Jason. I'm glad the first Montana turned out since I have way too much time invested into it. The first time I thought I was almost done with it, I heated it up too much with the cerium oxide buff polish and it cooked white spots into the surface of the cab. It's hard to explain what happened, but the clear agate turned white in spots. Not pretty. The only way to save it was to go all the way back to the 220 hard wheel and grind out something like 0.5mm from the whole face of the cab, and then run through all the wheels again. That happened with cerium on felt. I switched to cerium on rawhide and it doesn't seem to heat up near as much. Well, it sucks that happened...but boy did it turn out spectacular! That's interesting about the felt. The last Montana I did, I know it got scorching hot on the felt with 14k diamond paste...without that issue happening. I got another one that I cooked but didn't feel like fixing since it's too thin. I'll post a photo so you can see what I'm talking about. |
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catskillrocks
fully equipped rock polisher
Member since July 2008
Posts: 1,270
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Post by catskillrocks on Nov 29, 2021 23:43:37 GMT -5
What a gorgeous display of material
and talent Jonathan. Those are
spectacular!
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Post by knave on Nov 30, 2021 7:01:40 GMT -5
Crazy lace 4 with the orbs is stunning.
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herb
spending too much on rocks
Member since November 2011
Posts: 476
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Post by herb on Nov 30, 2021 10:14:32 GMT -5
The crazy lace cabs are terrific! Also really cool how different the pattern is on the back side of the cabs. They are perfect candidates for groove wraps. You'd get 2 pendants in one!
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Post by hummingbirdstones on Nov 30, 2021 10:23:15 GMT -5
Beautiful cabs, holajonathan! All of them are stunning, but I have to agree with Jason that the first Montana is spectacular!
I believe you can only get a cab hot enough on felt with cerium for that burn to happen. I'm guessing it has something to do with the Bielby layer which only can happen with oxides. When you get it that hot and the agate flows it captures some of the cerium under the layer and you get those white spots. It happened to me once way back when and I switched to leather laps for oxides and I never had that happen again. Glad you were able to grind those out because that cab was worth it.  |
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Post by stephan on Nov 30, 2021 12:00:16 GMT -5
Wonderful work. How did you dop them for doming the second side? I can't imagine doing the side pad without dopping, but also can't imagine either wax or superglue holding on a domed, polished face.
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Post by knave on Nov 30, 2021 12:12:48 GMT -5
Bielby Layer huh?
Learn sum everyday
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Post by knave on Nov 30, 2021 12:46:58 GMT -5
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Post by holajonathan on Nov 30, 2021 13:42:54 GMT -5
That CL slab is gorgeous and made some wonderful cabs. It took me months looking at that slab to figure out where to mark out preforms. In the end, I could have just randomly drawn some shapes on the slab and they would have turned out just as good. Awesome cabs! I love them all, but I think Montana #4 is my favorite. I liked that one too which is why I cabbed it even though it is tiny. What a gorgeous display of material and talent Jonathan. Those are spectacular! Thanks! I'm not sure about the talented part, but I am detail obsessed and perseverant, which means that eventually I learn how to do things well. Crazy lace 4 with the orbs is stunning. That one got way better as I ground the dome. After marking out 3 preforms, I had a little triangle of empty space which I free-formed into the largest possible shape. The crazy lace cabs are terrific! Also really cool how different the pattern is on the back side of the cabs. They are perfect candidates for groove wraps. You'd get 2 pendants in one! I should have cut a groove ahead of time, I suppose. Would be tough to do now. I didn't really plan to do the double dome, but the girdle was way too thick with just one dome, so I tried something new. Beautiful cabs, holajonathan ! All of them are stunning, but I have to agree with Jason that the first Montana is spectacular!
I believe you can only get a cab hot enough on felt with cerium for that burn to happen. I'm guessing it has something to do with the Bielby layer which only can happen with oxides. When you get it that hot and the agate flows it captures some of the cerium under the layer and you get those white spots. It happened to me once way back when and I switched to leather laps for oxides and I never had that happen again. Glad you were able to grind those out because that cab was worth it. Your explanation of the burn makes perfect sense. It is as if the cerium is embedded in the agate, and the only way to get it out is to grind off the flow layer. I switched back to rawhide leather after this happened. I was trying felt since the felt pads are really cheap. That means I could be careless about keeping them clean and just replace after using a couple times. Leather costs more and lasts a lot longer, but must be kept clean. Wonderful work. How did you dop them for doming the second side? I can't imagine doing the side pad without dopping, but also can't imagine either wax or superglue holding on a domed, polished face. Dop sticks? Nah... |
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Post by holajonathan on Nov 30, 2021 13:50:09 GMT -5
stephan Like dop sticks but flexible.  
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Post by stephan on Nov 30, 2021 14:28:33 GMT -5
stephan Like dop sticks but flexible. Your fingers must have a higher coefficient of friction than mine. I'm OK on the wheels, but on the side pad, especially leather/felt, I can't hold onto them to save my life. And that is holding onto the rough side. It is entirely possible that one or more of my flung cabs that I never found was the space junk that prevented the space walk from the ISS this morning. |
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Post by holajonathan on Nov 30, 2021 17:57:05 GMT -5
stephan Like dop sticks but flexible. Your fingers must have a higher coefficient of friction than mine. I'm OK on the wheels, but on the side pad, especially leather/felt, I can't hold onto them to save my life. And that is holding onto the rough side. It is entirely possible that one or more of my flung cabs that I never found was the space junk that prevented the space walk from the ISS this morning. I've sent a few flying when doing buff polish. Only one casualty that I can recall. I grip them tight on two or three edges, polish what I can with that grip, and change grip until everything is polished. Felt is more grippy than leather, but both grab hard as they start getting dry. I almost never lose grip on the Genie, and when I do, the cab just gets shot into the water pan without damage. |
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