Circular saws with diamond cutting process is provided. On cars which timber is provided with forward and return process. Max: 1000 mm, Min: 700 mm saw blade can be installed. The goal is to shrink the size of small-diameter logs and wood manufactures cutting blade when done would be to reduce the shavings. Machine speed rapidity complete cutting process used in 1 minute is 13 meters long. For example, 500 mm diameter, 3000 mm long been considered properly 0.2944 m3 of timber does. As a 1-hour uncut tree cutting machine can be 36 m3. The calculation process may vary with operating conditions.