What Is a Pumice Drill Bit? A Better Way to Put Pumice on a Drill
TurboStone is a durable pumice drill attachment built for wet cleaning of stubborn hard-water rings, mineral buildup, and calcium scale on suitable surfaces. Updated 10/4/2026
Samuel Miller
8/13/20263 min read


A pumice drill attachment puts the abrasive action of pumice behind the rotation of a cordless drill. Instead of supplying every scrubbing stroke by hand, you guide the tool across the buildup and control its speed and pressure.
That is what TurboStone was built to do.
Sometimes called a pumice drill bit, TurboStone is a cleaning attachment for stubborn hard-water rings, mineral deposits, and scale on suitable surfaces. Its reconstructed pumice body combines a familiar abrasive with the sustained rotation of a power tool.
Pumice, Rebuilt for Powered Cleaning
Making a useful powered pumice tool involves more than attaching a shaft to a block.
The abrasive body needs to hold together during rotation. The connection needs to transfer torque, and the working shape needs to reach the deposits being cleaned.
TurboStone combines selected pumice particles with an internal reinforcement and drive structure. The body is molded into a purposeful cleaning shape, and a removable adapter connects it to a standard variable-speed cordless drill.
The adapter separates from the stone, allowing the drive hardware to be retained when the abrasive body eventually needs replacement.
The Durability Upgrade
TurboStone’s development included extensive experimentation with wear rate, paste production, and shape retention.
Earlier versions offered five formulations through a system called StoneLife. That system belongs to an earlier generation of TurboStone.
The current lineup uses one evolved, durable formulation designed for substantially stronger shape retention during powered cleaning. Customers no longer need to select a StoneLife level.
In my extended, heavy-pressure demonstrations, the stone continued cleaning with much of its working body remaining. Wear showed up as gradual reshaping rather than the rapid breakdown that drove the earlier development work.
That durability is the central improvement: more sustained cleaning from a stone built to hold together under powered use.
Why TurboStone Is Used Wet
Water is part of the cleaning process. Fully wet TurboStone before starting, keep the working surface wet, and replenish water as you clean.
The porous body takes up water, while water at the contact area helps carry loosened abrasive and cleaning debris away. A fine wet pumice slurry can develop during use.
Keeping both the stone and surface wet is part of using TurboStone as intended.
Choose the Shape for the Job
TurboStone — The Original Tapered Cone
The original TurboStone has a rounded tip and narrower profile for curved surfaces, concentrated deposits, and tighter areas. It is the starting point for toilet-bowl rings and general mineral-buildup cleaning on suitable surfaces.
More Beef for Bigger Jobs
The larger tapered cone adds working material while retaining the familiar cone profile. It provides a fuller working body for larger jobs while maintaining access to curved surfaces.
Go Wide for Broader Contact
The short, broad version provides a wider working body for larger contact areas and side-pressure cleaning, including suitable pool-scale applications.
Choose the shape that fits the surface and the space you need to reach. See the current product listings for dimensions and availability.
What Can a Pumice Drill Attachment Clean?
TurboStone is intended for mechanical removal of stubborn deposits such as:
Hard-water and toilet-bowl rings
Mineral buildup and limescale
Calcium scale on suitable pool surfaces
Rust staining on compatible surfaces
The deposit and the surface underneath it both matter. Check the surface manufacturer’s cleaning guidance and test a small, inconspicuous area first. Stop if you see scratching, dulling, or another unwanted change.
Let the Drill Supply the Repetitive Motion
Hand pumice relies on repeated scrubbing strokes. TurboStone supplies continuous rotation while you guide its position and pressure.
That is the practical reason for the attachment: putting a familiar abrasive to work with a power tool, especially when persistent deposits make hand scrubbing tedious.
The current formulation brings stronger shape retention to that process, allowing you to concentrate on the cleaning rather than constantly working around a rapidly disappearing block.
Cleaning demonstrations show the tool in action and give you a useful view of the surface, buildup, technique, and result.
Use a Standard Variable-Speed Cordless Drill
TurboStone fits a standard variable-speed cordless drill through its matched adapter. Start slowly to establish contact, then adjust speed and pressure while observing the cleaning action.
Keep the stone and contact area wet. Use a drill rather than an impact driver, and keep the drill and battery out of the water.
If the internal black drive structure eventually becomes exposed, stop powered use.
Developed and Made in Iowa
TurboStone is manufactured in small batches in Iowa. Its development has involved formulation trials, reinforcement designs, molding improvements, cleaning demonstrations, and customer feedback.
Each stone is formed around its internal structure, allowed to cure, and checked for adapter fit and rotational alignment before shipment.
That work is reflected in the finished tool: durable reconstructed pumice, a purposeful working shape, and a drive system designed for powered cleaning.
Pumice, rebuilt for the job.
Explore the current TurboStone lineup and cleaning demonstrations at TurboStone.shop.
