If you've ever searched for a planetary polisher for stone countertops, you've probably noticed that most machines on the market started life as floor polishers. That matters more than most buyers realize. Here's what separates a purpose-built countertop polisher from a modified floor machine — and why it affects your results.
What Is a Planetary Polisher?
A planetary polisher uses dual-action motion: multiple heads spin independently while the entire body rotates simultaneously. This produces a fast, even, swirl-free finish that single-head rotary polishers can't match. It's the same principle used in automotive paint correction, scaled up for stone.
The Problem With Floor Machines on Countertops
Floor machines are engineered for flat, horizontal surfaces at ground level — large open slabs, tile floors, and concrete. When repurposed for countertops, they create several problems:
- Head geometry: Floor machine head spacing is optimized for large, uninterrupted surfaces. On countertops with edges, backsplashes, and cutouts, the geometry works against you.
- Weight distribution: Floor machines are heavy and designed to be pushed, not controlled with precision. On a countertop, that weight becomes a liability — especially near edges.
- RPM range: Many floor machines run at fixed or limited speeds not optimized for the grit progressions used in stone polishing (scratch removal → honing → high gloss).
- Water delivery: Floor machines typically rely on external water sources or none at all. Countertop work — especially in-home restoration — requires controlled, low-volume water delivery to protect cabinetry and flooring.
What a Countertop-Specific Design Solves
The Weha Pig 350VS was engineered from the ground up for stone countertop geometry:
- 14" diameter / 350mm — sized for countertop widths, not floor runs
- 300–940 RPM variable speed with memory — dial in the right speed for each grit stage and the machine remembers it
- 3 × 5/8"-11 heads — independently spinning, compatible with 5" and 6" snail-lock pads
- Built-in half-gallon reservoir + quick-connect garden hose port — controlled water delivery for both in-home and shop environments
- 63 lbs with operator-height extension handle — balanced for standing work, not floor-level pushing
- Auto-voltage recognition (110V/220V) — no manual switching between shop and jobsite power
Which Machine Is Right for Your Work?
| Floor Machine | Countertop-Specific (Pig 350VS) | |
|---|---|---|
| Surface geometry | Large flat floors | Countertops, islands, slabs on tables |
| Water control | Limited | Built-in reservoir + hose port |
| In-home use | Difficult | Yes — reservoir mode |
| Edge/cutout work | Awkward | Manageable with 14" footprint |
| Speed range | Fixed or limited | 300–940 RPM with memory |
| Pad compatibility | Floor-specific | 5" & 6" snail-lock (Donkey, Trio, etc.) |
For shops running high volume on full slabs, the Stone Ray 3-Head Surface Grinder is a lighter-duty planetary option worth considering for detail or tight-space work.
Bottom Line
If your work involves countertops — whether in-shop fabrication or in-home restoration — a purpose-built countertop polisher will outperform a floor machine on geometry, water control, and operator ergonomics. The floor machine compromise costs you time, finish quality, and control.
Shop the Weha Pig 350VS Planetary Polisher →
Replacement and additional pads: Weha Donkey Face Polish & Inline Polishing Pads →