✨ Unleash Your Inner Geologist! ✨
The Discover with Dr. Cool Replacement Rock Tumbler Barrel is a 2-pound, leak-proof polishing barrel designed for use with National Geographic and Discover with Dr. Cool tumblers. Its durable rubber construction ensures a quiet operation, making it ideal for polishing a variety of materials, including gemstones and sea glass. With a commitment to customer satisfaction, this barrel is the perfect addition for hobbyists and professionals alike.
F**4
Works well! No leaking!
So glad I found this! It works perfectly with the Nat Geo rock tumbler.
H**.
Works great
Works well as replacement for my National geographic rock tumbler. I use it for milling antique muzzleloading propellant.
J**S
Works great
I have the grey National Geographic tumbler kit. Came with the small barrel that holds roughly a cup. This one is of the same build and quality. Seems about 3x the size. I don’t think you could go any bigger and still fit on the machine.
R**R
It rocks!
I got this as a spare for my National Geographic tumbler. It's much smaller than the original, but it still works (although it spins at a faster rate due to the smaller size). It's really sturdy and I'm very pleased with it. It's handy for smaller batches.
R**
Good product, but the knob broke shortly afterwards.!!!
Very good product, but the metal threaded stud on the lid that the knob screws to, just broke off n started spinning while on the tumbler...wound up causing me to have to cut it open to get my rocks out.!!! The plastic knob wouldn't come off.!!! I gave 4 stars, but would've given 5 if that hadn't happened.!!! Just one that wasn't tack-welded very good.!! Then to compound it, Amazon sent me another for free and it was lost in transit to SC in Concord, NC. They just eventually replaced my money & I bought one to replace it with the credit from Amazon.!!!
B**E
Works good
Works good
R**O
Better than the original
Great replacement for the tumbler that came with my NG kit. It seems to be better suited for the unit - it APPEARS to move faster - I MAY be wrong, but it somehow gets the job done more quickly on cleaning beads (about 20 mins). Love it
M**N
Works great
Once I have finished steps 1 and 2 with the heavier grits, the rock load is reduced quite a bit so this smaller size is perfect for the polishing stages. It works perfectly on the National Geo tumbler I have and the lid seals great. So far it's held up really well but if it tanks, I'll come back and say so in an update. So far so good.
