Answer
Silicon carbide sandpaper can smooth small rough tile edges. Wet sand with 220 or 320, then 400 or 600.
Why it happens
Hard tile edges need silicon carbide abrasive and light wet sanding to smooth small rough spots.
Recommended grit
Use 220 or 320 for rough ceramic edges, then 400 or 600 for smoother edges.
Wet or dry
Wet.
Success check
The edge feels smoother and no sharp burrs remain.
What to do
- Rinse the tile edge.
- Wet sand the rough edge with 220 or 320.
- Refine with 400 or 600.
- Rinse away grit before checking by touch.
Avoid: Do not use sandpaper to reshape large tile cuts.