What Is Stone Grinding?
Stone grinding is a precision process used in professional ski and snowboard tuning to restore and optimize the base of the equipment. Over time, ski and snowboard bases become scratched, uneven, or contaminated from use. Stone grinding addresses these issues by removing a thin layer of the base material and applying a new structure tailored to snow conditions and performance needs.
The process is carried out using a machine with a large, rotating stone. Grinding stones are typically made with silicon carbide (SiC) or aluminum oxide (Al₂O₃) as the primary abrasive materials. These are industrial-grade abrasives known for their hardness and cutting performance. As the base passes over the stone, the machine flattens the surface and cuts in a specific texture or “structure.” This structure helps manage how water flows under the ski or snowboard, significantly improving glide and control.
Modern stone grinding machines are often computer-controlled, allowing technicians to fine-tune every variable—pressure, feed rate, stone speed, and Structure type—to achieve a consistent, high-performance finish. Whether preparing skis for a race or refreshing a well-used snowboard for another season, stone grinding delivers the level of precision required for serious performance.
Why Is Stone Grinding Necessary?
There are several key reasons to include stone grinding in your tuning routine:
1. Restores Base Flatness
Ski and snowboard bases warp over time due to pressure, rock damage or moisture. Stone grinding re-establishes a perfectly flat surface, which is critical for consistent edge contact and control. It also grinds out damage on the base side edge and the existing base bevel. Ensuring a flat ski for the Base Beveling process.
2. Removes Base Contamination
The process strips away embedded dirt, oxidized material, and minor scratches that build up over time—refreshing the base material and improving wax absorption.
3. Applies a New Structure
Base structure is essential to managing snow and water interaction. Different snow conditions call for different patterns (linear, cross, chevron, etc.), which can only be applied accurately through stone grinding.
4. Improves Wax Retention
A freshly ground base has open pores that allow wax to penetrate deeply. This results in better glide, longer-lasting wax, and more efficient tuning over time.
Stone Grinding vs. Belt Grinding: What’s the Difference?
While both are base tuning methods, they serve different purposes and produce very different results.
| Feature | Stone Grinding | Belt Grinding |
|---|---|---|
| Base Flatness | High precision | Moderate; follows existing contours |
| Structure Application | Fully customizable | Basic to none |
| Surface Finish | Smooth, clean, polished, race-ready | May leave fibers raised |
| Material Removal | Controlled and consistent | Less precise |
| Best Use | Performance tuning, race prep | Quick maintenance, pre-grinding before stone grinding |
Belt grinding is faster and more budget-friendly, making it common in general shops and rental fleets. However, for skiers and riders looking for performance, glide, and durability—especially in varying snow conditions—stone grinding is the Industry Standard.
When Should You Get a Stone Grind?
We recommend stone grinding:
- At the beginning or end of each season
- After 20–30 days on snow, especially in abrasive conditions
- When the base appears dry, oxidized, or scratched
- If the Base Side edge is rounded over and burred
- Before major trips or races where performance is a priority
It’s an investment that restores your gear’s potential and extends its life when combined with regular waxing and edge maintenance
Final Thoughts
Stone grinding isn’t just for racers—it’s for anyone who wants to get the most out of their gear. Whether you’re carving groomers, chasing powder, or dropping lines in the backcountry, a properly structured and flattened base makes a noticeable difference in control, speed, and glide.
If you’re looking for long-lasting performance and expert-level tuning, stone grinding is the industry standard. We offer precision grinds tailored to your riding style and snow conditions—reach out today to schedule your next tune.
