yepx
off to a rocking start
Member since August 2019
Posts: 22 
|
Post by yepx on Sept 13, 2020 3:14:26 GMT -5
This question kinda fits under a few different thread so I though it best to post under general. Before I committed to cutting my obsiddian I thought I would just polish it instead but I have no real experience with tools and I think I used to wrong dremel attachments. I circled the attachments I used and the obsidian, now it's scratched and has coloring to it from the attachments I used. I discovered later the ones I used were for working on metal, not stone. Is there a way I can fix this error? Please edit the image of my attachments when describing which ones to use, if any. I do have a wet tile saw, if it's easier to just use the saw to polish it let me know and if possible please link a how to video)
  |
|
|
|
Post by miket on Sept 13, 2020 4:57:42 GMT -5
This question kinda fits under a few different thread so I though it best to post under general. Before I committed to cutting my obsiddian I thought I would just polish it instead but I have no real experience with tools and I think I used to wrong dremel attachments. I circled the attachments I used and the obsidian, now it's scratched and has coloring to it from the attachments I used. I discovered later the ones I used were for working on metal, not stone. Is there a way I can fix this error? Please edit the image of my attachments when describing which ones to use, if any. I do have a wet tile saw, if it's easier to just use the saw to polish it let me know and if possible please link a how to video)
I use the diamond tire burrs. I'll try to post a pic later, pm me if I forget or if you have any questions, I'll be glad to help! 😁 |
|
|
|
Post by miket on Sept 13, 2020 7:21:13 GMT -5
I use these. I usually try to get them on jadecarver.com but he's been out for a while... I use them to shape though, not polish. Mine get polished in the tumblet. oldschoolrocker might be able to give you better advice.  |
|
oldschoolrocker
fully equipped rock polisher
Member since January 2019
Posts: 1,578
|
Post by oldschoolrocker on Sept 13, 2020 10:55:46 GMT -5
for shaping I use 50mm diamond cutting discs and for sanding and polishing I use silicon carbide sandpaper and then alum oxide polish . the cutting discs are very inefficient usually only get maybe a cpl cabochons shaped before grinding slows way way down. for something as large as the stone in the picture bits like miket suggested are a better choice. but anything that large and rough is going to be quite the task with a dremel |
|
|
|
Post by stephan on Sept 15, 2020 18:37:32 GMT -5
And obsidian can be tricky to polish, even with lapidary equipment.
I would consider using the saw to cut it down into manageable pieces before starting on any equipment, unless you want to get a tumbler and do the whole thing that way. I've never heard of polishing with a saw, but I suppose some flat lap pads might fit???
|
|
NRG
fully equipped rock polisher
Member since February 2018
Posts: 1,688
|
Post by NRG on Sept 16, 2020 9:22:29 GMT -5
The brass brushes are softer than the stone. So, they left a smear.
That smear will come off with an acid wash.
|
|
|
|
Post by greig on Sept 16, 2020 13:30:44 GMT -5
All great responses. The wire brush can be used to clean a rock, but kinda useless for shaping or polishing. I tried to expose silver ore on some rocks and really only managed to wear out some brushes. Diamond or carbide bits typically work better. I don't have the patience to use a Dremel on large rocks and respect anybody who does. ;-)
|
|
