Grit Size vs. Surface Roughness
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Approximate comparision of sandpaper grit size and surface roughness:
| Grit Size | Surface Roughness (10-6 m) |
|---|---|
| 80 | 1.80 |
| 120 | 1.32 |
| 150 | 1.06 |
| 180 | 0.76 |
| 240 | 0.38 |
| 320 | 0.30 |
| 500 | 0.18 |
| 600 | 0.13 |
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