How loud is it really?

KFFKFF rates it below 35 dB, roughly library-level. That is a manufacturer figure; a full 17-pound barrel of rocks will sound louder in practice than an empty drum.

What does the timer do?

It runs from 1 to 240 hours, so you can set a full coarse stage and walk away. Power-off memory resumes the cycle after an outage instead of restarting it.

Do I need to buy grit separately?

The description lists the tumbler, barrel and controls but no grit or stones. Plan on buying coarse, medium, fine and polish grit plus a burnishing step.

Is 17 pounds too big for a beginner?

It is more capacity than a first batch needs. You can run partial loads, but a smaller 3- or 6-pound tumbler is easier to learn on and cheaper to supply with grit.

What can I tumble in it?

It is a rotary tumbler for rocks and similar hard material. The dual speeds let you run slower for fragile stones and faster for coarse shaping.

How does it compare with a National Geographic or Lortone tumbler?

It offers far more capacity and a wider timer range than typical hobby kits. Those brands are better documented over years of use, while this one's long-term reliability is less proven.

Where is the KFFKFF 17 lbs Rock Tumbler Kit cheapest?

At Walmart, for $188.99, as of our latest check.

What do buyers say about the KFFKFF 17 lbs Rock Tumbler Kit?

Rated 5 out of 5 from 2 ratings.

KFFKFF 17 lbs Rock Tumbler Kit

Best price now

$188.99at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

KFFKFF 17 lbs Rock Tumbler Kit

Best price now

$188.99at WalmartChecked Nov 8

Prices are checked against each store and labelled with when.

Visit Walmart

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Price facts

Last seen at $188.99 at Walmart on Nov 8.

Our take on the KFFKFF 17 lbs Rock Tumbler Kit

The KFFKFF 17 lbs Rock Tumbler Kit is a large-capacity rotary tumbler built around a brushless belt-drive motor and a hexagonal barrel. It adds dual speeds, a 1-to-240-hour timer, overload protection and power-off memory, and KFFKFF rates it at under 35 dB. The 17-pound barrel holds more stones per batch than the 3- and 6-pound drums most hobby kits use, so it suits families and club-sized loads rather than a single small batch. Rivals at this capacity tend to be louder and simpler, with fewer controls; the trade-off is a heavier, bulkier unit that takes up real bench space.

Best forFamilies tumbling large batches at onceHobbyists moving up from a 3- or 6-pound tumblerQuiet indoor use in a garage or utility roomLong multi-week polishing runs with set-and-forget timing

Pros

17-pound barrel handles big loads per batch
Brushless belt-drive motor rated for long use
Quiet operation, rated under 35 dB
Timer adjustable from 1 to 240 hours
Dual speeds for coarse grinding and final polish
Overload protection and power-off memory

Cons

Large drum and heavy load take up bench space
Big batches need more grit and more rocks to fill
No grit, media or stone assortment listed in the kit
Few independent owner reports on long-term durability

KFFKFF 17 lbs Rock Tumbler Kit prices at every store

WalmartNew
In stock
$188.99Checked Nov 8
Visit Walmart

About the KFFKFF 17 lbs Rock Tumbler Kit

This is a rock tumbler kit with a 17-pound capacity barrel. The hexagonal barrel polishes raw stones to a smooth, shiny finish, and the larger capacity lets you process more stones at once. The kit works through a step-by-step polishing process.

A brushless belt-drive motor runs the tumbler at a steady speed. Noise is below 35 dB. The control panel lets you set the runtime from 1 to 240 hours and choose between two speeds for different polishing phases.

Safety features include overload protection and a power-off memory function that lets the tumbler resume after an interruption. The barrel is sealed to reduce the risk of leaks. The low-voltage design reduces the risk of electric shock.

Model: SP-17-001
Color: Black
Capacity: 17 lbs barrel
Barrel shape: Hexagonal
Motor: Brushless belt-drive
Noise level: Below 35 dB
Timer: 1 to 240 hours
Speed settings: 2 speeds
Safety: Overload protection, power-off memory, low-voltage design, sealed barrel
Net weight: 20.72 lbs / 9.4 kg
Dimensions: 12.6 x 14.17 x 10.75 in / 320 x 360 x 273 mm
Dimensions (no barrel): 12.6 x 14.17 x 4.13 in / 320 x 360 x 105 mm
In the box: 1 x Rock Tumbler Kit, 1 x Base Unit, 1 x Barrel, 1 x User Manual, 1 x Belt

Specifications

color: BlackSource

Questions and answers

How loud is it really?: KFFKFF rates it below 35 dB, roughly library-level. That is a manufacturer figure; a full 17-pound barrel of rocks will sound louder in practice than an empty drum.
What does the timer do?: It runs from 1 to 240 hours, so you can set a full coarse stage and walk away. Power-off memory resumes the cycle after an outage instead of restarting it.
Do I need to buy grit separately?: The description lists the tumbler, barrel and controls but no grit or stones. Plan on buying coarse, medium, fine and polish grit plus a burnishing step.
Is 17 pounds too big for a beginner?: It is more capacity than a first batch needs. You can run partial loads, but a smaller 3- or 6-pound tumbler is easier to learn on and cheaper to supply with grit.
What can I tumble in it?: It is a rotary tumbler for rocks and similar hard material. The dual speeds let you run slower for fragile stones and faster for coarse shaping.
How does it compare with a National Geographic or Lortone tumbler?: It offers far more capacity and a wider timer range than typical hobby kits. Those brands are better documented over years of use, while this one's long-term reliability is less proven.
Where is the KFFKFF 17 lbs Rock Tumbler Kit cheapest?: At Walmart, for $188.99, as of our latest check.
What do buyers say about the KFFKFF 17 lbs Rock Tumbler Kit?: Rated 5 out of 5 from 2 ratings.