**3. Results and Discussion**

## *3.1. Regression Models*

For each response and honing stage, a second order model was adjusted. The residuals were checked, and a goodness of fit test was performed for each model. For each response, a graphic was obtained (Figures 3–5, respectively), in which the coefficients of each regressor are presented in the following way:



In the following subsections the results for surface roughness, material removal rate and tool wear are presented.
