The performed investigations focused on the effect of the feed rate on wood surface roughness. The experimental material comprised samples obtained from beech sawn timber. The machine tool used in the described experimental material was a vertical frame sawing machine of DTPC-71 type. On the basis of measurements and calculations of some selected parameters of surface roughness: Ra, Rmax, Rz and Rm, the authors found a correlation between the feed rate and wood surface roughness.

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