how much do you put in a 1 lb Tumbler barrel?

You would add 2 tablespoons per lb. of rock for both Stages 1 and Stage 2 (that is shown). Steps 3 and 4 will require 1 tablespoon per lb. of rock.

Is this good for etching glass? Has anyone tried it on glass?

Yes, it will work for tumbling glass. Using Step 2 will give a matte finish. Tumbler for a couple of days and check if are happy with the finish. You may have to tumble a couple more days to get the effect you like. To get a more clear look, continue with Step 3 grit (500 grit) and then possibly on to Step 4 (aluminum oxide).

Is it 6 table spoons of grit for 3 pouns of rock? The video doesn't show them putting that amount in

Yes. We recommend 2 tbs per lb of rock for steps 1 and 2. 1 tbs per lb of rock for step 3 and then 1.5 tbs per lb of rock for step 4.

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Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (6 lb.)

Polly Plastics Rock Tumbler Media Grit Refill, Medium 180/220 Silicon Carbide Grit, Stage 2 for Tumbling Stones (2 Pack) (6 lb.)

Product ID: 480386070

Details

Brand
Polly Plastics
Grit number
180
Manufacturer
Polly Plastics
Material
Plastic

🔄Universal compatibility with all rock tumblers

⚙️6 lb Medium 180/220 Silicon Carbide Grit

🛡️Durable, reusable spill-proof jars

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VT53762

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In stock

Sold byAmazon VanuatuDelivered byDesertcartCustomer service byDesertcartReturns14 days · 30 with PRO

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Description

💎 Transform rough stones into polished gems like a pro!

UNIVERSAL FIT - Works seamlessly with Elenco, Lortone, Smithsonian & more
MADE IN THE USA - Premium quality with American-sourced materials
BEGINNER APPROVED - 100% satisfaction guarantee for worry-free tumbling
MESS FREE STORAGE - Reusable jars keep your grit fresh and spill-free
PRECISION STAGE 2 GRIT - Medium 180/220 silicon carbide for flawless smoothing

Polly Plastics Rock Tumbler Media Grit Refill offers 6 lbs of medium 180/220 silicon carbide grit, designed as Stage 2 in a 4-step tumbling process. Compatible with all major rock tumblers, it comes in durable, reusable jars to prevent spills and ensure easy storage. Made in the USA with high-quality materials, this grit guarantees smooth, professional results and is backed by a 100% satisfaction guarantee—perfect for both beginners and seasoned hobbyists.

Specifications

ASIN	B09L5K5LXT
Brand	Polly Plastics
Customer Reviews	4.8 out of 5 stars 18 Reviews
Grit Number	180
Grit Type	Medium
Grit number	180
Grit type	Medium
Item Weight	2.91 Kilograms
Item weight	2.91 Kilograms
Manufacturer	Polly Plastics
Manufacturer Part Number	3405246831
Material	Plastic

Reviews

J**N

Good Stuff Maynard

21.02.2026

M**T

Smooths them out

11.11.2023

C**S

Excellent Grit

15.04.2023

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