Research Article
Optimization of Surface Roughness in Drilling Medium-Density Fiberboard with a Parallel Robot
Table 7
The mean response table for Ra factor.
| Level | Control factors | Surface roughness (Ra) | A | B | C |
| Level 1 | 3.382 | 4.433 | 2.966 | Level 2 | 4.138 | 3.653 | 3.752 | Level 3 | ā | 3.194 | 4.561 | Delta | 0.756 | 1.240 | 1.595 |
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