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: Sorry about the high humidity, Ed. I had to suffer through it last week. You're one tough hombre. You'll survive it, and live to grind another day! I've heard of people dumber than a bag of hair... Know anybody like that? (No blonde jokes, please.)
Sept 20, 2014 23:02:20 GMT -5
wampidy: My hair was pretty smart. It ran away.
Sept 21, 2014 0:50:49 GMT -5
rockpickerforever: Ha ha, Jim, you funny! Did it run away, or just leisurely stroll away?
Sept 21, 2014 4:18:31 GMT -5
Fossilman: LMAO,mine ran away when I was around 26 years old,haven't missed it one bit...saves on soap..
Sept 21, 2014 8:44:21 GMT -5
mr.mohs: u r right Jean! what a different a day makes! Dew point down, humid 1/2, I'm still an ornery hombre and the rock'n fine! Miraculous!
Sept 21, 2014 14:17:07 GMT -5
Shotgunner: just put both a pastrami and a porkstrami (Hey!! why not??) in brine - pictures in two weeks. Stay tuned.
Sept 21, 2014 18:55:26 GMT -5
stephent: Porkstrami?? ain't skeered of it getting "slick" in that brine in a few days then?
Sept 21, 2014 19:28:29 GMT -5
wampidy: It ran about the same age as flossiman. My kids taught me every bald joke that was ever written. I can sure grow a full head of hair on my ears though. Tried combing it over but the wind raised hell with that.
Sept 21, 2014 19:55:28 GMT -5
Shotgunner: stephent - slick?? naw. Pork meat cures with the same salts when making sausage. We'll see. I could be a fool...
Sept 21, 2014 20:16:48 GMT -5
Fossilman: Ear hair,back hair,knuckle hair,etc,etc.......LMAO It all went south...
Sept 21, 2014 22:54:46 GMT -5
nowyo: My father always said the only thing I was good for was growing hair. Still can, dam the costs for haircuts and such.
Sept 22, 2014 0:12:51 GMT -5
mr.mohs: grooming was never my strong suit! I saved lot money! money for rocks
Sept 22, 2014 0:14:14 GMT -5
rockpickerforever: Very nice day today. It was a Goldilocks day, not too hot, not too cold, but just right! My Chargers won, my Padres won, and everything is right with the world.
Sept 22, 2014 0:35:39 GMT -5
Fossilman: Thumbs up Jean!!!!!!
Sept 22, 2014 9:47:41 GMT -5
Fossilman: Well I have onions to dry out ..First time trying this type of storage out..Cooler days are here finally!! Hell ya'!!!
Sept 22, 2014 10:32:55 GMT -5
mr.mohs: golden days ahead !
Sept 22, 2014 11:37:42 GMT -5
rockpickerforever: That's the spirit, Ed! Bet you are enjoying this cooler weather, it's not cramping your style. Tell ya what, I'll take the gold, and you can have the diamonds, lol. (Oh, and I've still got all the hair on my head... yeah, okay, so it is blonde! So what?)
Sept 22, 2014 13:21:17 GMT -5
mr.mohs: well my forecast is for thinning hair & rocking hearts (& probably other things) --but I try 2 stay optimistic
Sept 22, 2014 14:00:19 GMT -5