meviva
Cave Dweller
Member since July 2013
Posts: 1,474
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Post by meviva on Sept 21, 2015 13:29:00 GMT -5
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Post by captbob on Sept 21, 2015 13:35:18 GMT -5
WOW !!! Congratulations!
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Post by cobbledstones on Sept 21, 2015 13:44:07 GMT -5
Congratulations! I would love to hear about your process, if you wanted to share.
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azgnoinc
spending too much on rocks
Member since March 2014
Posts: 484
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Post by azgnoinc on Sept 21, 2015 15:19:51 GMT -5
Congrats on the win!!
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Post by Noosh9057 on Sept 21, 2015 16:13:28 GMT -5
Congratulations.
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cardiobill
freely admits to licking rocks
Member since March 2012
Posts: 881
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Post by cardiobill on Sept 21, 2015 16:32:52 GMT -5
Woot Woot!! Congrats Mahogony obsidian? How was the rough when you got it? Great job
Bill
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meviva
Cave Dweller
Member since July 2013
Posts: 1,474
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Post by meviva on Sept 21, 2015 18:05:11 GMT -5
Congratulations! I would love to hear about your process, if you wanted to share. Thanks….I really wish I would have taken notes. This is basically what I did: Since we got 3 lbs of obsidian and I only had 6 lb barrels…I bought a 3 lb Thumler barrel and put it on my QT-66. I started with all big pieces in 80 grit but after the first run I decided to cut some of them into smaller pieces. Each week I cleaned out and looked at all of them but couldn't really pull any out for the next step for a while. Eventually, I got about a handful that could move on. I stopped working on them for several months. Then a few weeks before the deadline I started again but since I only had a handful and my vibe bowl is a 4 lb. I used a lot of ceramic…probably 90% ceramic for the last 3 steps. I ran each step for about 4 days, and burnishing with dawn soap between each step. I used 120/220 SiC, 500 AO prepolish and I bought a polish that was for obsidian and other hard to polish stones. It's called M5 I got it on Amazon. The rocks were very shiny after the pre polish but I think the M5 helped a lot. I also used bottled water in the pre polish and polish steps since Arizona water is very hard. Not sure if that helped or not. These are the ones I sent in These are the remainder of that batch
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meviva
Cave Dweller
Member since July 2013
Posts: 1,474
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Post by meviva on Sept 21, 2015 18:09:09 GMT -5
Woot Woot!! Congrats Mahogony obsidian? How was the rough when you got it? Great job Bill Thanks! There were several types of obsidian. Normal black, mahogany, and maybe silver sheen, gold sheen and rainbow....but I can't be certain because I don't know all of the types. There was a variety of sizes, most probably should have been cut into smaller pieces. Andrea
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panamark
fully equipped rock polisher
Member since September 2012
Posts: 1,343
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Post by panamark on Sept 21, 2015 18:51:52 GMT -5
Excellent polish Andrea! Congrats! Have you done a fair amount of obsidian before?
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Post by MrP on Sept 21, 2015 18:56:02 GMT -5
I can see why you won. Great Job................MrP
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Post by orrum on Sept 21, 2015 19:15:43 GMT -5
Congratulations!
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Post by Drummond Island Rocks on Sept 21, 2015 20:17:44 GMT -5
The winning rocks really look great but I really like some of the others in the extras too. Congrats meviva. Chuck
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meviva
Cave Dweller
Member since July 2013
Posts: 1,474
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Post by meviva on Sept 21, 2015 20:31:32 GMT -5
Excellent polish Andrea! Congrats! Have you done a fair amount of obsidian before? Thanks....Actually this is the first batch of obsidian I have ever done....probably beginner's luck.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,563
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Post by jamesp on Sept 21, 2015 20:32:44 GMT -5
Just wow. Congrats, you deserve it. Of all things in a rotary.
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Post by Noosh9057 on Sept 21, 2015 20:32:57 GMT -5
Wow those look great.
Roger
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meviva
Cave Dweller
Member since July 2013
Posts: 1,474
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Post by meviva on Sept 21, 2015 20:58:41 GMT -5
Just wow. Congrats, you deserve it. Of all things in a rotary. Thanks...only they 80 grit was done in a rotary, the rest was done in a vibe.
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jamesp
Cave Dweller
Member since October 2012
Posts: 36,563
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Post by jamesp on Sept 21, 2015 21:04:40 GMT -5
Just wow. Congrats, you deserve it. Of all things in a rotary. Thanks...only they 80 grit was done in a rotary, the rest was done in a vibe. Sorry, did not catch that. No matter, you put the polish on a difficult stone.
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meviva
Cave Dweller
Member since July 2013
Posts: 1,474
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Post by meviva on Sept 21, 2015 21:05:23 GMT -5
The winning rocks really look great but I really like some of the others in the extras too. Congrats meviva. Chuck Thanks... the mahogany in the middle is my favorite, since we weren't getting them back, I didn't want to send it in. Andrea
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Post by Jugglerguy on Sept 21, 2015 21:32:19 GMT -5
Nice job on those, Andrea. Congrats on the win!
I entered the contest for the first time this year. I really thought I had a good chance of placing because my rocks looked really good. I'd love to see what the difference in the winning rocks and the losing rocks was. It's impossible to tell from the pictures.
I've never heard of M5. I decided to go with tin oxide. I had some around, I never use it, and have read several places that it's good for softer rocks and obsidian. I'm curious what everyone else went with for a polish. I had at least 50% ceramic in my Lot-O, but not 90%.
I can't wait for next year's contest.
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tkvancil
fully equipped rock polisher
Member since September 2011
Posts: 1,547
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Post by tkvancil on Sept 22, 2015 9:57:20 GMT -5
Congratulations !!! Very nice looking bunch of OB. And yet another RTH champion. Way to go !!!
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