Ships by Next Business Day  

 Home » Rock Tumbling Supplies » Rock Tumbler Grit

Rock Tumbler Grit


Rock tumbling grit
"Tumbler grit" is a silicon carbide powder that is much harder than the types of rocks that are commonly tumbled. If it is tumbled in a barrel with rock and water the abrasion caused by the grit particles rounds the sharp edges off of the rocks. We use about two level tablespoons of grit per pound of rock in a rotary tumbler and 1/2 tablespoon of grit per pound of rock in a vibratory tumbler.
Individual Grits

Coarse Rock Tumbler Grit (60/90 Mesh Silicon Carbide)



Coarse grit for rock tumblers

60/90 Grit
Step 1 (Rotary)



$5.99 Per Pound

$19.99 for 5 Pounds
This is the grit that most people use in STEP 1 of the rock tumbling process in a rotary tumbler. It is an ungraded 60/90 mesh silicion carbide granule. In a rotary tumbler we use about two level tablespoons of grit per pound of rock.

One pound units are shipped in a resealable plastic tub. Five pound units are packaged in a durable zip-lock bag and shipped in a box.

Caution: Do not dispose of used grit, polish or rock slurry down a drain.



Medium Rock Tumbler Grit (150/220 Silicon Carbide)



medium grit for rock tumblers

150/220 Grit
Step 2 (Rotary)
Step 1 (Vibratory)





$5.99 Per Pound

$19.99 for 5 Pounds
This is the grit used for STEP 2 of the rock tumbling process in a rotary tumbler. It is also used for STEP 1 in a vibratory tumbler. It is an ungraded 150/220 mesh silicon carbide powder. We use about two level tablespoons per pound of rock in a rotary tumbler and about 1/2 level tablespoon per pound of rock in a vibratory tumbler.

One pound units are shipped in a resealable plastic tub. Five pound units are packaged in a durable zip-lock bag and shipped in a box.

Caution: Do not dispose of used grit, polish or rock slurry down a drain.


Fine Rock Tumbler Grit (500F Mesh Silicon Carbide)
Also known as pre-polish



medium grit for rock tumblers

500F Grit
Step 3 (rotary)
Step 3 (vibratory)



$9.99 Per Pound

$24.99 for 5 Pounds
This is the grit used for STEP 3 of the rotary rock tumbling process and STEP 2 of the vibratory tumbling process. It is a 500F silicon carbide powder. In a rotary tumbler we use about two tablespoons per pound of rock. In vibratory we use about 1/2 tablespoon per pound of rock. .

One pound units are shipped in a resealable plastic tub. Five pound units are packaged in a durable zip-lock bag and shipped in a box.

Caution: Do not dispose of used grit, polish or rock slurry down a drain.


Rotary Grit Kits

Four-Step Rock Tumbler Grit Kits for Rotary Tumblers



Rock tumbler grit kit

Four Step Grit Kit



Save $44.96!

Buying a large grit kit will save you $44.96 over the cost of buying five standard grit kits. Your shipping costs will also be lower. In our opinion, this is the best deal on our website!


Large Grit Kit
Only $79.99 Each

Five pounds each of coarse,
medium and fine grit plus 2.5
pounds of TXP polish.

Standard Grit Kit
Only $24.99 Each

One pound each of coarse,
medium and fine grit plus
1/2 pound of TXP polish.
Here are all of the grits and polish that you need to process rocks in a rotary tumbler. Includes coarse (60/90), medium (150/220) and fine (500F) silicon carbide grit and TXP aluminum oxide rock polish.

Large Grit Kits
contain 5 pounds of coarse, medium and fine grit plus 2.5 pounds of TXP polish. Packaged in ziplock bags within corrugated boxes.

Standard Grit Kits
have 1 pound of coarse, medium and fine grit plus 8 ounces of TXP polish. Packaged in resealable tubs. This is enough supplies to tumble up to four three-pound barrels of rocks.

Caution: Do not dispose of used grit, polish or rock slurry down a drain.



Single Use Rock Tumbler Grit Kits for 3lb Tumbler Barrels



Rock tumbler single use grit kit
$9.99 Per kit

$8.99 if you buy 3 or more.
(adjust quantity in cart)
Here are all of the grits and polish that you need to process ONE barrel of rocks in a small rotary tumbler. Just cut the bag open and dump it in the barrel. The perfect amount of grit for barrels of the Lortone 3A and 33B tumblers and the Thumler's A-R1 and A-R2 tumblers.

Note: We include a second packet of coarse grit because running the rocks for a second week in coarse usually produces much nicer tumbled stones!

Caution: Do not dispose of used grit, polish or rock slurry down a drain.


Vibratory Grit Kit

THREE-Step Rock Tumbler Grit Kit for Vibratory Tumblers



Vibratory tumbler grit kit
$24.99 Per kit
This three-step grit kit is designed for use in the Lot-o-Tumbler and in the Thumler's Ultra Vibe vibratory rock tumblers.

Each kit contains two pounds of medium grit (150/220), one pound of fine grit (500F), and one-half pound of #61 Rapid Polish (a sub micron aluminum oxide polish). This is enough grit and polish to process many pounds of rocks. More Information.

Caution: Do not dispose of used grit, polish or rock slurry down a drain.



RockTumbler.com has a Shopper Approved rating of 4.8/5 based on 3216 ratings and reviews