collapse

Author Topic: Which grit should I use for ocean tumbled stones?  (Read 1293 times)

Manficat

  • ALF'er Silver Member
  • *
  • Posts: 27
  • Either fossicking or thinking about fossicking
Which grit should I use for ocean tumbled stones?
« on: January 19, 2024, 04:20:57 PM »
After way too much time of using a bench grinder to polish tiny rocks, I have finally decided to buy a tumbler. I'm thinking of buying the 'Vevor rock tumbler'. Does anyone know about this particular tumbler?
My main question is which grit should I use on ocean tumbled agates? After many trips to moonlight head, I have a jar full of rounded beach agates. Their shape is already quite good, but some are still a bit jagged. Should I start them in the tumbler with the first grit, or should I put them in a bit later and the finer grits will sort them out?
Thanks,
Manficat  beers

Faceting Frank

  • Global Moderator
  • ALF'er Platinum
  • *****
  • Posts: 438
Re: Which grit should I use for ocean tumbled stones?
« Reply #1 on: January 19, 2024, 10:49:44 PM »
Been 40+ years since I had a tumbler, but from memory I did all stones with just one grit. Let the grit grind down along with the stones and when all looked good. Polish with cerium oxide and plastic pellets to cushion the stones.

Rusted

  • Global Moderator
  • ALF'er VIP
  • *****
  • Posts: 594
Re: Which grit should I use for ocean tumbled stones?
« Reply #2 on: January 20, 2024, 10:05:36 AM »
Start at the start, they may be rounded but the surface has been well and truly bashed into that shape, you need to remove a small layer of chipping and damage first, they should go quick though. Is the Vevor a rotary or vibe?
I just answered myself ,it's a rotary.
« Last Edit: January 20, 2024, 10:07:54 AM by Rusted »

Manficat

  • ALF'er Silver Member
  • *
  • Posts: 27
  • Either fossicking or thinking about fossicking
Re: Which grit should I use for ocean tumbled stones?
« Reply #3 on: January 20, 2024, 09:38:53 PM »
Thanks,
After some more research on the vevor, it's only 1lbs which is way too small for me. I've found a better option now, some 6lbs rotary tumbler directly from China. Has mixed reviews but the other options are just too much for my pocket money budget. If anyone else can recommend a better option that would be great.
Alternatively, I could make my own, but I have no experience with motors. Shame Essendon lapidary club has no tumblers.
Thanks,
Manficat

Rusted

  • Global Moderator
  • ALF'er VIP
  • *****
  • Posts: 594
Re: Which grit should I use for ocean tumbled stones?
« Reply #4 on: January 22, 2024, 11:23:35 AM »
Have a look at this page for some ideas on making your own, they really are an easy build if you have a bit of mechanical nouse and a few tools.
https://rocktumbling.com/diy-rotary-rock-tumblers/

Bucket

  • Global Moderator
  • ALF'er VIP
  • *****
  • Posts: 1112
Re: Which grit should I use for ocean tumbled stones?
« Reply #5 on: January 23, 2024, 05:31:59 PM »
I just put on around 5kg of beach stones this morning (in a rotary tumbler) and have started them on 220. Will check them in a week and they should be ready for 400 after that. We normally start on 80 for rough stones.
Common sense isn't exactly common

MakkyBrown

  • Administrator
  • ALF'er VIP
  • *****
  • Posts: 1731
    • Andrew Brown Faceting Designs
Re: Which grit should I use for ocean tumbled stones?
« Reply #6 on: January 23, 2024, 08:04:53 PM »
If they need rounding I start with 44# which is best bang to buck so to speak. Just got to be careful not to cross contaminate.

Manficat

  • ALF'er Silver Member
  • *
  • Posts: 27
  • Either fossicking or thinking about fossicking
Re: Which grit should I use for ocean tumbled stones?
« Reply #7 on: January 23, 2024, 10:12:42 PM »
Good to know. Will try soon  beers

Bucket

  • Global Moderator
  • ALF'er VIP
  • *****
  • Posts: 1112
Re: Which grit should I use for ocean tumbled stones?
« Reply #8 on: January 24, 2024, 03:24:34 PM »
If they need rounding I start with 44# which is best bang to buck so to speak. Just got to be careful not to cross contaminate.
Are you rounding off bricks Makky?
Common sense isn't exactly common

Faceting Frank

  • Global Moderator
  • ALF'er Platinum
  • *****
  • Posts: 438
Re: Which grit should I use for ocean tumbled stones?
« Reply #9 on: January 24, 2024, 05:39:01 PM »
The grit would be bigger than the pebbles :D

 

Recent Activities

Faceting machine head assembly. by Faceting Frank
[February 26, 2024, 07:46:39 PM]


Trip to Castlemaine by Bucket
[February 26, 2024, 12:55:39 PM]


Central Vic Quartz by Manficat
[February 26, 2024, 10:17:06 AM]


Save the Gemfields. by pc bowe
[February 19, 2024, 02:03:11 PM]


Club Badges or Pins by dughug
[February 15, 2024, 05:40:42 PM]


Facetron Encoder Mod Thread by Faceting Frank
[February 14, 2024, 03:19:28 PM]


Stone/gem identification by RoughCreations
[February 14, 2024, 08:00:47 AM]


Forum Update 2024 by swirly
[February 07, 2024, 09:52:43 AM]


Joke of the Day by JBK
[February 04, 2024, 10:18:33 PM]


Andrew Brown's latest Gemstone Faceting Designs book (Volume 6) is available now by MakkyBrown
[February 04, 2024, 09:14:10 PM]


Commercial Posting Rules by Bucket
[January 25, 2024, 05:34:12 PM]


Which grit should I use for ocean tumbled stones? by Faceting Frank
[January 24, 2024, 05:39:01 PM]


Inverell visit by Manficat
[January 21, 2024, 11:10:02 PM]


Star Sapphire? by Bucket
[January 18, 2024, 11:32:01 AM]


Heart of the Mountain by MakkyBrown
[January 16, 2024, 04:50:26 PM]

SimplePortal 2.3.7 © 2008-2024, SimplePortal