Quick Answer

Polishing looks simple but the results depend on the order and the tooling. Yes — for small areas, edges and touch-ups, an hand grinder with a variable speed control (1500–4000 rotations per minute) and 3–5'' diamond pads works well. Use a backing plate with hook-and-loop, run the metal and resin sequence in order, and keep the pad level.

For machine-matched tooling, browse our 3'' Metal Bond Diamond Grinding Disc with 4 Segments range.

About What You Need

Key points for the polishing sequence.

• Water kit (optional) — a grinder water attachment for wet work.
• Pad set — metal-bonded matrix, transitional and resin pads in your target sizes.
• Variable-speed hand grinder — fixed-speed grinders spin too fast for burnish pads and burn the resin.
• Backing plate — 3'' or 5'' hook-and-loop backing disc matched to your pads.

This stage decides how much reflection the floor finally shows.

The Technique

What matters most in this stage.

Our 3'' Dry burnish pads are made for grinder work; the 3'' resin set covers the full sequence.

• Start with metal-bonded matrix (50–100#) to level the spot and strip laitance.
• Move in overlapping passes — don't stay in one spot (heat builds up).
• Work wet or dry — dry for small spots with a industrial vacuum; wet for more suitable mirror finish.
• Transition to resin — 200/400#, after that 800, 1500# for mirror finish.
• Keep the pad level — tilting the grinder gouges the floor.

Miss this step and the gloss will not come up evenly.

Frequently Asked Questions

Q: What speed should my grinder run for polishing?

A: The practical answer is, Keep resin pads in the 1500–3500 rotations per minute range. Above 4000 rotations per minute resin pads burn; below 1500 they don't cut.

Q: Is it possible to use a fixed-speed grinder?

A: For most jobs, Fixed-speed grinders (typically 10,000+ rotations per minute) are too fast — they burn resin pads and create swirl marks. Use a variable-speed model.

Q: In what way large an area can I polish with a grinder?

A: In short, Comfortably up to 5–10 m²; beyond that a floor equipment is far more efficient. Grinders reflectivity at edges, corners and touch-ups.

Looking for the right tool? Check our 3'' Metal Bond Diamond Grinding Disc with 10 Segments. Looking for the right tool? Check our 3'' Metal Bond Diamond Grinding Disc with 5 Segments.

Conclusion

The finish is the sum of the stages - stay disciplined and the floor shines. JOY TECH's 3'' pad range is built for grinder-based burnishing.