Hi friends, I went to town today and found about 1.5 pounds of obsidian at Vinnie's Thrift Shop (75 cents). It's in three pieces, roughly 3" x 5" each, up to 1" thick. Some edges are thin and extremely sharp. I've never tried to polish this glass as I haven't had any rough material. Now with this, and maybe getting more, it may be time to try. It would have to be made into much smaller pieces, and I'm stumped as to how to cut it. Would my trusty little 7" tile cutter likely work. Using a saw seems counter-intuitive. I would expect the material to shatter. Can anyone set me straight on how to get it into smaller bits? Also, would it work to make up a load by adding pieces of ordinary glass? Thanks for your help. Cheers! Robbiejohn.
Post by ColtChainmailJewelryDesigns on Jul 20, 2011 3:18:29 GMT -5
Cutting it with a saw is a GOOD thing!!!! It's not likly to shatter unless it gets snagged or something. But I really should zip it before I say something that i dont even know about the truth, lol!
You can smash it with a hammer, but with so little amount you have, not a good idea. Smashing Obsidian make lots of tiny shards. But that isn't the way I do it anymore. And I find you can get lot less tiny shards (if any) if you hold the rock, and tap it on a sledg hammer on the ground! Seems like it brakes off larger bits. =)
You're better off tumbling obsidian with obsidian (of the same type). Using glass as a filler may work, but there are too many variables to know. Not all obsidian and not all glass are created the same.
As suggested in another post I tried a small diamond blade on my Dremel a few nights ago and found that it cuts it like butter and no chipping on edges. You get less waste than your tile saw would create. I know I`ll use mine for it again when needed. The blades are pretty inexpensive too for the Dremel.
Post by susand24224 on Jul 21, 2011 0:36:01 GMT -5
Overall I agree with Steve--many variables between glass and obsidian. That being said, I just tumbled some glass and obsidian and the variables worked out in my favor--both tumbled and polished nicely. I remember reading that glass can be as low as Mohs 5 in hardness and obsidian is 6-6.5 so it seems that if anything goes wrong it will be with the glass. This is just a *slightly* educated guess, though
rockpickerforever: Oh, I should mention... Cold here is maybe down into the 40s. Not that below freezing or below 0 type of insanity. Who can live in such a place that has those temps? And all that white stuff, uggghhhh!
Feb 26, 2015 11:11:22 GMT -5
drocknut: Chili pepper fumes, one way to clear out the sinuses..lol. I can handle the cold (btw 40 doesn't count as cold yet) but that hot stuff you call jelly geez how can you eat that...lol.
Feb 26, 2015 12:16:47 GMT -5
rockpickerforever: Diane, it's not the sinuses, the fumes make you gag and your throat burn. Trying to be considerate of poor, sick Lucy. Diane, you just don't know what you're missin. And yes, considering what it costs to live here, 40 degrees IS damn cold, lol.
Feb 26, 2015 12:42:17 GMT -5
edmohs: I'll just be grinding in the rain this weekend. And if you heard my singing it sounds just the same. rain or no rain...mostly
Feb 26, 2015 18:53:11 GMT -5
Fossilman: Tammy just made up a batch of Habanero jelly last week...........Yes,it clears the house for awhile...LOL Love that jelly too...Taking a jar or two to Roy's today..
Feb 27, 2015 10:14:32 GMT -5
rockpickerforever: Fossilman, that jalapeno jelly came out smokin' hot, the hottest batch yet. Close to being too hot, maybe?? The jalapenos give it that great flavor, add about ten Hot Black Cobra chilies for heat. Need to eat it with something to avoid stomach ulcers.
Feb 27, 2015 11:51:10 GMT -5
rockpickerforever: The rain is a'coming. Supposed to get cold, windy and wet tonight, and stay that way until Tuesday. Yep, field trip to Himalaya Mine on Saturday has been postponed... edmohs, okay to sing, mostly, but stay out of the rain! Grind 'em, baby, grind 'em!
Feb 27, 2015 14:37:30 GMT -5
snowmom: baking brownies....
Feb 27, 2015 16:45:55 GMT -5
wampidy: Food with pain has never made a lick of sense to me. Brownies sound good.
Feb 27, 2015 18:48:39 GMT -5
Rockoonz: Our rock club lapidary shop is now in a building with lots of handcrafters and artists, across the hall is Honey Mamas organic fudge, sweetened with honey. My favorite has cayenne in it.
Feb 28, 2015 1:53:02 GMT -5
rockpickerforever: Jim, ever heard of "hurts so good?" Just kidding. My jalapeño jelly is hot, but not 3-alarm. Snowmom, what kinda brownies did ya make?
Feb 28, 2015 7:20:28 GMT -5
drocknut: Yes I do know what I'm missing Jean, heartburn. ...lol.
Feb 28, 2015 10:36:05 GMT -5
drocknut: Mmmm brownies, mmmmm fudge now I'm getting hungry.
Feb 28, 2015 10:38:13 GMT -5
snowmom: jean, they are plain with powdered sugar on top, son has "bodfl" and ordered them that way.
Feb 28, 2015 11:32:26 GMT -5
snowmom: Bodfl is 'brownies on demand for life' my life or my ability to keep making them. Very few people have bodfl
Feb 28, 2015 11:32:56 GMT -5
snowmom: my other specialty is fudge. nobody has fodfl..
Feb 28, 2015 11:35:10 GMT -5
drocknut: My grandfather made wonderful fudge. We kids got to help him mske it. Fun memories of him.
Feb 28, 2015 12:23:20 GMT -5
Pat: rockpickerforever 's jelly is the best! I make peanut brittle, and peppermint bark. Used to make caramels (yum), but can't handle the butter anymore.
Feb 28, 2015 15:15:23 GMT -5
jakesrocks: Dang rockpicker, what you talking about "too hot" ? Ain't no such critter. The hotter the better.
Feb 28, 2015 17:54:32 GMT -5
Shotgunner: Ok guys. That's three dogs in one week. Enough already!! Gtg have a good cry.
Feb 28, 2015 19:30:15 GMT -5