r/RockTumbling Jun 16 '26

Announcement Concerning the increase in karma farming/repost bot posts

80 Upvotes

I appreciate everyone that reports them. I remove the post as soon as I see the report, and it definitely helps if you know where the stolen content is from and post a link so I can quickly verify.

In mod tools, I've turned on the reputation filter. To be honest, I am not entirely sure what that will do. It's sort of a black box setting. The description reads "Reduce the risk of exposing your community to content that breaks the rules by filtering content from potential spammers and unestablished accounts"

I also added some code to auto moderator so that posts by Reddit accounts less than 3 days old will show up in the mod queue to be manually approved.

Hopefully between those two changes, we see less of these type of posts.


r/RockTumbling Jul 05 '22

Guide /r/RockTumbling Knowledge Base

181 Upvotes

Here is a compilation of guides I have written, as well as a few others, for easy access.

It's important to note that I am not a subject matter expert. Some of these FAQs that I wrote are not even based upon my own experience. I drew heavily upon the experience of /u/michigan_rocks and his Youtube videos. Also, ask 10 people how to tumble rocks and you will get 10 different answers. They will be similar enough though that you can really follow any one, or mix and match between them all for what works best for you. The basic steps will always be the same. It's exactly how you do them that people might have different processes for.

Also, I know several other users in this community have written their own guides or how-tos. If you comment below with a link I can add a link to the main post.


FAQ - How much electricity does a tumbler use?

FAQ - What is a good beginner tumbler?

FAQ - What do I need to get started?

FAQ - Where can I get rocks to tumble?

FAQ - Where can I buy good grit?

FAQ - What is tumbling media? What is it and how is it used.

FAQ - How do I get a good polish with the Nat Geo tumbler?

FAQ - How long should I run stage 1?

FAQ - How do I know if a rock is ready to move on from coarse? by /u/Ruminations0

FAQ - How full should my barrel be? An auditory guide.

FAQ - My rocks are round and smooth; can I skip stage one?

FAQ - How long am I supposed to run each stage?

FAQ - What is the burnishing stage? What does it do? When do I run it?

FAQ - What do I do with the slurry after tumbling?

FAQ - I just tumbled some rocks and they are dull. What do I do?


Slightly more advanced topics:


r/RockTumbling 7h ago

Pictures Thank you for all the advice!

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177 Upvotes

I got LOTS of good feedback and advice on my previous post - and well… yeah… it does work better when you do it the right way😂

This was a batch i had rolling in S2 when I posted the other one, so i’ve been able to use the advise I got!

Much better results, not all of them are perfect but definitely a lot more shiny ✨

Edit: These are all beach finds!


r/RockTumbling 4h ago

Pictures Week 2 in stage one!

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23 Upvotes

These are the ones ready to move on to stage 2!


r/RockTumbling 3h ago

Pictures Fresh From Stage 3

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13 Upvotes

These coastal Maine finds are moving on to be polished! I’m excited for this batch as there are a couple of little agates I drove a ways to collect!


r/RockTumbling 3h ago

My first fairly successful semi-shiny batch

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14 Upvotes

I think I like leaving them with a few imperfections.


r/RockTumbling 6h ago

Question Newbie question - bruising?

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11 Upvotes

This is from my first batch after 2 weeks in stage 1. I know it’s very smooth for only 2 weeks, but it started as a pretty smooth beach rock. Found on a beach in New Hampshire- so I’m guessing it’s a type of quartz maybe?

My question is - is the “crackly” look just the way the rock looks, or did I bruise it? I included what I’m pretty sure was the before picture.


r/RockTumbling 12h ago

Question Should I move on to the next stage, or carry on?

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22 Upvotes

These are the first rocks to come out of my DIY tumbler. They have been going for around 12 days so far in 20 grit silicon carbide.

I know the grit is more aggressive than what is typically used for stage 1, but it's what I had and I figured it would only only help to do the initial material removal quicker.

I do now have a more typical range of grits ready to cover stage 1-4.

Some I think are ready to move on, particularly the pink quartz and jade. But I am not sure on the others. Would you carry these on for a while longer?


r/RockTumbling 6m ago

Pictures Another successful batch!

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Upvotes

I ran another batch of mostly agates for stage 2-4 in the vibratory tumbler. The carnelian was stunning!

I also have a pile of tiny agate chips that I decided to polish too.

All and all these turned out pretty darn good!


r/RockTumbling 11h ago

Baby lsa

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18 Upvotes

It's pretty small but it's so cool


r/RockTumbling 17h ago

Pictures What are friends for!!!

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31 Upvotes

Buddy at had to acquiesce to his wife's "request" (lol!) to get rid of his albeit small, rock collection... guess who scored!!! Variety city!!!

And then my wife surprised me me with a bag of Charleviox!

Sweet!


r/RockTumbling 18h ago

Question Can this be tumbled?

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20 Upvotes

I’m just going to useI found this at the creek today and I’m curious if it would do well in the tumbler. What’s got me unsure is its “crystal looking wall.” (New to tumbling here) Parts of it is smooth but other parts are jagged and I’m wondering if the grit will just continue to chip away at it instead of smoothing it out. 🤷‍♂️ Hopefully y’all are able to understand what I’m trying to say. It can be frustrating trying to discuss a subject you’re just getting into because you don’t know all the correct terms or names for everything yet.🫤


r/RockTumbling 1d ago

What is this?

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25 Upvotes

r/RockTumbling 20h ago

What stage should it have been in longer?

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6 Upvotes

Bloodstone Rotary stage 1 Vibe 180 2 days

500 ao 2 days Micro alumina 1 day


r/RockTumbling 12h ago

Rock tumbling identification

0 Upvotes

Can anyone help with rock identification and if they can be put in the rock tumbler? I'm still learning :) also what do people do after the first stage and the second stage is not as full because the rocks grounded down?


r/RockTumbling 1d ago

Rocks my friend tumbled

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194 Upvotes

r/RockTumbling 1d ago

Question Ordering rough

5 Upvotes

Has anyone ordered from rock and tumble and had good results?

What are your favorite places to order rock for tumbling?

Thank you in advance!

EDITED: misread as rough and tumble when it’s actually rock and tumble


r/RockTumbling 2d ago

Pictures First Completed Batch

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223 Upvotes

r/RockTumbling 2d ago

Just received a big ol bag of small crazy lace agate pieces. This is going to be such a fun tumble!!

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89 Upvotes

r/RockTumbling 2d ago

Guide How I pop the lid off my 3lb Highland Park barrels

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28 Upvotes

I've seen a lot of people (rightly) complain about the lids on the Highland Park barrels. I myself had a hard time dealing with them. Attached photos show my solution. This is a shim of medium density hardwood (cherry). I cut it so that it just fits between the edge of the aluminum lid and the lip on the rubber barrel. I chose this over a metal strip because the aluminum lid will dig into the wood just enough for the wood to grip and not slip off. The wood also won't bugger up the lip of the lid. Softwood will also work but will get chewed up over time.

I stick the shim in the groove and gently twist. I do this in a few places around the rim--don't pry all the way up in one spot alone.

This solution works a treat and leaves my delicate baby hands unfettered.


r/RockTumbling 2d ago

Pictures New to tumbling

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25 Upvotes

Purchased a koolstone timber a few weeks back and acquired a few rocks locally as well as purchased a few random ones offline. So here is the start of my first batch. I will try to update next week as well as order more grit to run a few weeks of stage 1. As time goes on I will try to match stones by hardness and types but I just wanted to run it now as I've been impatient. Wish me luck. Eventually I want to acquire a larger machine and do it more often but this was just to try it out.


r/RockTumbling 2d ago

Having a go at Labradorite

21 Upvotes

So decided to get back into the hobby and why not start with one of the most difficult rocks to tumble... This is stage one after 7 days, thinking I put in way too much ceramic media at it's barely changed shape at all.


r/RockTumbling 3d ago

Pictures Banded Iron

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516 Upvotes

This batch of banded iron turned our surprisingly well. There was a bit of bruising when they came out of stage 3, but overall they took a nice shine. Seeing the pyrite was a susprise, it wasn't visible on the rough rocks. These came from the Temagami region of Ontario.


r/RockTumbling 2d ago

Question I'm guessing this is schist with some kind of inclusion. Am I right to assume this would go badly in a tumbler?

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7 Upvotes

I'd love to reveal the crystal inclusion inside this schist type rock found in south Dakota. I'm afraid tumbling such a rock would just destroy it? Any ideas?


r/RockTumbling 3d ago

Bloodstone Before & After 19 Weeks

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364 Upvotes

Finished this batch of Bloodstone and Friends. This bloodstone rough was kind of a bust. It has a lot of internal fractures and these areas that would not smooth out even after months in stage 1. It also didn’t have much of any of the signature red inclusions.

I’m happy with how it came out, and some of the other rocks from previous batches that I added in successive weeks of stage 1 came out great.