To determine the appropriate grit polishing pad for porcelain tile, follow this progression based on the information provided:

Start with a lower grit (50-100 grit) for initial grinding and removing imperfections or cutting marks. This coarse grit prepares the surface by smoothing rough edges .
- Example: A 70-grit pad is often recommended as the starting point for edge smoothing .
Progress to medium grits (200-400 grit) to refine the surface and eliminate scratches left by coarser pads. These grits transition the tile toward a polished finish .
- Example: A 200-grit pad is used after initial grinding to fine-tune the surface .
Finish with high-grit pads (≥3200 grit) for final polishing and achieving a glossy, smooth surface. These ultra-fine grits refine the tile’s appearance .
Additional Tips:
- Use water during polishing for better results, especially with diamond pads .
- Flexible pads (e.g., 4-inch electroplated options) work well for curved or irregular edges .
Always check the manufacturer’s guidelines, as specific products may vary in recommended grit sequences.