Sand Blasting Media


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BigN
September 25, 2011, 05:53 PM
With all the talk of tumbling media here, what about using some fine sand blasting media in the tumber? I can get a hundred pound bag for about $8. Anyone try this yet?

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rcmodel
September 25, 2011, 05:58 PM
NOOOOOO!!

Fine Silica or emery dust from the blast media will eat your reloading dies for breakfast.

The primary reason ground walnut shells and corncob are used for tumbling is that the residue is harmless to dies, and gun barrels.
It doesn't hurt that it is cheap too.

Buy the way.
100 pounds of sand isn't very much sand.
100 pounds of ground walnut or corncob is an awful lot!

You can get corncob or walnut media cheap several places. Granger is one.
Or you can buy Zila brand Lizard Litter at the pet store.
It works better the real tumbler media.

rc

CraigC
September 25, 2011, 06:05 PM
No! This kind of media would be way too aggressive.

CAWalter
September 25, 2011, 06:10 PM
Nominate for the worst reloading tip!

CAW

animator
September 25, 2011, 08:34 PM
Not to mention.. depending on which blast media you use, that stuff will stick on anything. Aluminum oxide blasted parts need a good air-blasting to get all the stuff off, and even then, I usually still have to wash the parts in the sink afterward.


So you'd have to wash the brass, and dry it, and in general be way more effort than is worth.


Crushed walnut and NuFinish is hard to beat, in my opinion...

ranger335v
September 25, 2011, 09:37 PM
Sand Blasting Media - you wanna run a little sand dust down your bores? That would be a real blast ... on your rifling!

evan price
September 26, 2011, 05:42 AM
Good grief no! That stuff will embedd in the pores of the brass. Then you get nice gritty cases in your chamber and in your dies. A good walnut shell will do wonders even with chocolate brass. I can think of no better way to ruin a batch of brass and your dies than to put aluminum oxide grit in a tumbler.
Plus it will eat out the bowl of the tumbler!
I changed ceramic tips in my sandblast gun quite often due to erosion. And that's ceramic!

BigN
September 26, 2011, 09:25 AM
Ok, I guess that settles that. Just a thought...

rondog
September 26, 2011, 09:38 AM
Go to pet store.

Buy this.....

http://i18.photobucket.com/albums/b150/rinselman/guns/ammo%20and%20reloading/KayteeWalnutBirdLitter.jpg

JDGray
September 27, 2011, 05:09 AM
The very fine corn cob blasting media I use works great!!

http://www.grainger.com/Grainger/ECONOLINE-Blast-Media-2MVR5?cm_mmc=GoogleBase-_-Machining-_-Finishing%20Supplies-_-2MVR5&ci_src=14110944&ci_sku=2MVR5

rondog
September 27, 2011, 09:55 AM
The very fine corn cob blasting media I use works great!!

http://www.grainger.com/Grainger/ECO...4&ci_sku=2MVR5

Yes, it does! For polishing. I use the exact same stuff, with a little NuFinish car polish mixed in. Does a wonderful job of making them shiny. But it's not aggressive/abrasive enough to clean brass, that's where the walnut litter comes in. I tumble in dry walnut first, then polish with the corncob.

But sand? No way!

dprice3844444
September 30, 2011, 11:29 PM
http://m14forum.com/ammunition/103303-case-cleaning-stainless-steel-media.html

longdayjake
October 1, 2011, 09:56 AM
Here is some very valuable information. DO NOT BUY THE MEDIA FROM GRANGER!!!. They charge shipping. Instead buy them from drillspot because they have free shipping. The funny thing is that Granger drop ships for drillspot so you will be getting the exact same thing that you would get from granger. Here is a link to the size that won't get stuck in the flash holes. $26 for 40lbs of media is AWESOME. Just do it! Everyone is doing it. You know you want to.

http://www.drillspot.com/products/521055/econoline_526040g-40_40_lbs_blast_media

rondog
October 1, 2011, 12:04 PM
I bought mine from Grainger and just picked it up at their warehouse on the way to my office. No shipping that way either.

longdayjake
October 1, 2011, 12:10 PM
well, that works too I guess.

Jim Watson
October 1, 2011, 07:57 PM
I got my walnut hull media from the local blasting supply dealer.
50 lbs for $16 plus sales tax, pick it up at the warehouse.

T Bran
October 1, 2011, 08:11 PM
Im trying a new one as I type so far so good. If it works at least ill have a use for all the rice my wife has stored in the pantry. Dont think ill put it back though.
T

jcwit
October 1, 2011, 08:14 PM
Don't forget to factor in your gas cost if picking up at the warehouse. At $3.50 a gal. it now costs to travel every mile, even getting 20 mpg thats $ .18 cents per mile just for gas.

zoom6zoom
October 1, 2011, 08:26 PM
I can get a hundred pound bag for about $8.
I wouldn't even use that crap in my blasting cabinet, it's no good for anything but cleaning bricks and maybe causing silicosis if you don't take the proper precautions.

FROGO207
October 2, 2011, 09:29 AM
I use a mix of corn cob and walnut with some NU Finish to polish my finished rounds. I use SS media and a Thumblers to polish the brass now. Before I used to use the finer crushed walnut in a vibratory tumbler to polish my brass. That works as the best method to clean brass in a vibratory tumbler as stated above. The red rouge that is available is quite abrasive and I damaged a couple sizing dies with it so I stopped using it entirely. To speed up the process of cleaning the tarnish (brown discoloration) off the brass I used the IOSSO case cleaner liquid, then tumbled as usual. It cut the tumbling time in half at the very least. That is what I would do if you are looking to speed up the process. I would think that the blasting media would be the worst choice of all. I would use common sand that you can get from the hardware store first as it would not damage the brass as much but still think that this would be a poor choice.YMMV

Jim Watson
October 2, 2011, 10:29 AM
Don't forget to factor in your gas cost if picking up at the warehouse.

The warehouse is one block off my direct route to the shooting range.
I think the carriage cost is lost in the noise for a several year supply.

jcwit
October 2, 2011, 06:19 PM
Well then that will work.

ants
October 2, 2011, 06:58 PM
... BigN might not be so stupid. We need to clarify what kind of media he means.

Crushed walnut and corncob ARE sandblasting media.

They are used in sensitive areas where slag and silica would foul machinery.


We reloaders borrow that media for cleaning brass.
Pet owners borrow it for pet litter, etc.
But we aren't the first ones to invent uses for it.

It has been used as organic sandblast media for at least 50 years.
Maybe longer, but I'm only 57 years old so I can only remember back 50 years.


We should clarify with BigN on what kind of media he was talking about.
If he means walnut or corn cob, the only response is to tell him the grit size.

jcwit
October 2, 2011, 09:34 PM
Doing a quick search I find most companies supplying abrasive blasting media refer to sand blasting media as glass or Aul. oxide. Others such as walnut or corn cob as just blasting media not sand blasting media.

Hope this helps

rondog
October 2, 2011, 11:22 PM
... BigN might not be so stupid. We need to clarify what kind of media he means.

Crushed walnut and corncob ARE sandblasting media.

They are used in sensitive areas where slag and silica would foul machinery.


We reloaders borrow that media for cleaning brass.
Pet owners borrow it for pet litter, etc.
But we aren't the first ones to invent uses for it.

It has been used as organic sandblast media for at least 50 years.
Maybe longer, but I'm only 57 years old so I can only remember back 50 years.


We should clarify with BigN on what kind of media he was talking about.
If he means walnut or corn cob, the only response is to tell him the grit size.

No, "sandblasting" media is SAND, period. Used for heavy stuff like blasting buildings, bridges, ships, drilling rigs, etc. Everything else is MEDIA blasting, using things such as glass beads, walnut, corncob, baking soda, plastic beads of various shapes, aluminum oxide, etc. If it's done in a cabinet or small blasting room, it's media blasting. Done outdoors with heavy-duty gear on heavy equipment with massive compressors and blasting equipment, it's usually sandblasting. Two different animals.

ants
October 3, 2011, 12:14 AM
Yes, I thought there would be some resistance.

I just thought it would be smart to find out exactly what the guy was asking about.
He might not know the difference. I thought it would be courteous to ask.

BigN
October 5, 2011, 05:11 AM
The particular type of blasting media I was talking about is actually made of coal slag. It's called Black Beauty. I sell it where I work so I get a massive discount on it. Just figured it was cheap enough if it worked. It doesn't feel anymore abrasive than the walnut stuff I use now. I'll try a tumbler full and let you know what's up...

Jim Watson
October 5, 2011, 09:08 AM
Ah, yes, Black Beauty. My outfit's boilermakers and steelworkers used it.
Supposedly less prone to give you silicosis if you happen to inhale some of the dust.

ants
October 7, 2011, 10:18 PM
Crushed slag. It may be worth trying, if you can get two pounds or so.
Go ahead and tumble a small batch of brass for 45 minutes.
Then inspect under a magnifying glass. If it's too abrasive, you'll know.

Basically, you want a mild media, anything similar to walnut or corn cob.
Some folks use rice, for instance. Organic media is usually the ticket.

But... lotsa benchrest rifle folks use stainless steel (usually pins rather than shot).
I know it sounds like a bad idea, steel on brass,
but go to the benchrest forum sites and do a little searching.
It is surprisingly common, with no ill effect.

Two years ago, a guy from Washington state sent me some iron shot.
I weighed a 30-06 case, put it in the tumbler for 2 hours, and he was right.
It cleaned the insides of the case perfectly!
And it weighed the same after.

Sometimes we get a notion that doesn't hold in real life.
Metallic media may not be so wrong after all.
We just gotta keep our minds open.


So, slag just may be worth trying, my friend.

But I wouldn't buy 80 pounds at first, just a couple handfuls.
Test it.

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