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Fig. 4. Mean surface roughness values in machining parameters for R a
Fig. 5. The surface plots of R a according to interactions effect of machining parameters The main effects of factors (tool diameter, feed rate, spindle speed) on roughness were statistically significant, although interaction of factors had no effect on surface roughness. Spindle speed was a significant factor affecting surface roughness. The surface roughness decreased with increasing spindle speed. The spindle speed at 24000 rpm
İşleyen & Karamanoğlu (2019). “ Roughness of MDF ,” B io R esources 14(2), 3266-3277. 3273
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