Answer
For stainless sink scratches, sand with the grain using 400 or 600, then refine with 800 or 1000.
Why it happens
Stainless sinks usually have a visible grain or brushed pattern that must be followed while blending scratches.
Recommended grit
Use 400 or 600 for scratch blending, then 800 or 1000 for finer matching.
Wet or dry
Wet or dry; keep the surface clean at finer stages.
Success check
The repaired area follows the original grain direction and does not show cross-scratches.
What to do
- Find the direction of the sink grain.
- Sand with the grain using 400 or 600.
- Refine with 800 or 1000 if needed.
- Clean residue before inspecting.
Avoid: Do not sand across the stainless grain.