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
1dave: wampidy: That is sad Jean. Drunk drivers should just be shot.[br][br]Read more: http://andy321.proboards.com/conversation/408512?page=1&scrollTo=415692#ixzz2lUWZ4WvF[br]Dittos for them and child molesters!
Nov 23, 2013 12:36:25 GMT -5
rockpickerforever: Thanks, Jim and Dave. I agree. It happened almost exactly 35 years ago, just before Thanksgiving. She was only 22 years old. A great loss.
Nov 23, 2013 14:15:29 GMT -5
Shotgunner: It's almost spherical! gimme a G - an A - a B- another B- an R - give me an O - What;s that spell?? Gabbro!!
Nov 24, 2013 21:28:52 GMT -5
Shotgunner: cutting AND spheremaking - life is grand.
Nov 24, 2013 22:16:28 GMT -5
wampidy: Is that a rock or a brother that talks a lot? I prefer good old American names like "wampidy"
Nov 25, 2013 7:18:43 GMT -5
rockpickerforever: I am taking care of business - at Ford dealership, getting oil changed in FX4 before heading out to desert tomorrow. I love wi-fi! Will be going thru RTH forum DTs while away, no wi-fi out there. Maybe McDs in Yuma?
Nov 26, 2013 13:19:36 GMT -5
Fossilman: Good luck Jean.....
Nov 26, 2013 15:19:31 GMT -5
rockpickerforever: Thanks, Mike. You can bet I'll have fun, one way or the other!
Nov 26, 2013 15:26:48 GMT -5
herchenx: Has anyone heard from Jo lately? (NatureNut)
Nov 26, 2013 16:54:48 GMT -5
drocknut: Have fun in the desert Jean.
Nov 30, 2013 20:49:04 GMT -5
Shotgunner: rock'n the homegrown pizzas tonight! woot!
Dec 1, 2013 19:06:41 GMT -5
Fossilman: Nothing better than making homemade pizza,plus the dough and sauce....
Dec 1, 2013 22:07:06 GMT -5
iamnoone: Just started my first tumble, my rocks are not going in circles like the thumler uv 18 videos I've seen online. They are just vibrating next to each other quickly. I followed instructions to the letter. Enough grit, water and rock. Am I just worrying?
Dec 2, 2013 18:55:28 GMT -5
herchenx: iamnoone - are the rocks already rounded or are they all jagged? is the barrel full up to within 3/4" of the top of the cone? Are you running a UV10 or a UV18 or something else?
Dec 3, 2013 15:31:58 GMT -5
catmandewe: Usually if they are just sitting there you have too much water. I usually add one drop of liquid hand soap also to make the grit stick to the rocks, but be careful not to add too much soap or water.
Dec 3, 2013 22:28:54 GMT -5
Jasper-hound: Guys, I appreciate the questions. For my own pendants, which need to be more masculine, I wear simple stones with only a sterling silver ring soldered through a drilled hole. I have found this to be a good look, and other men enjoy them as well.
Dec 8, 2013 12:02:14 GMT -5