The Thumlers Model B rock tumbler is an all time favorite of ours – affectionately known as Big Red by those in a popular rock tumbling forum!
This is perhaps the top level rock tumbler which people in the hobby aspire to owning, due to its huge barrel and overall rock tumbling capacity. The thumlers tumbler model b is used by enthusiasts all over the world once they are well and truly hooked on producing stunning gemstones and need that extra bulk to boost their hobby to the next level – which is often creating jewelry with their stones and selling it on either their own online store, or another platform.
With its robust barrels, this machine is often used to polish brass as well as being popular for lapidary. The winged nuts on the barrel lids ensure an adjustable tight and even fit all the way round, ensuring that there is no leakage of slurry during the tumbling process.
A rubber lining inside the standard barrels helps to keep the noise down – but as you can imagine, with a load this large – there is a lot more banging around inside and naturally more noise is produced.
One owner said that a wedge beneath the motor adds additional support and helps to align the drive belt, however this has not been established as a requirement by other users.