Electric log saw have models 20/30/40 which equipped with a blade of different diameter, they could cut the logs with maximum diameter of 20/30/40cm into segmentations. The cutting length is adjustable by the operator. 

The power amount of the machine determine the maximum blade diameter of the saw, the blade diameter determine the maximum diameter of the log that the machine could process.

Model 20 is designed for small-scale or occasional garden work, its primarily intended for home use. Easy to operate, they are ideal for preparing firewood for the winter, whether you are cutting logs to the right length or for breaking them down for removal. 

Model 30/40 maybe more suitable for log debarking and cutting plant or sawmill, its stronger power is good at processing particularly large timber or a large volume of wood. And if you need, the motor power could increase to 11kw.

Safety tips:
1. The machine have an easily accessible emergency stop button to keep you safe.
2. When sawing, be sure to wear safety shoes, gloves, protective goggles, and noise-cancelling headphones.
3. If the log is very hard to cut, please adjust its position on the bench and make several attempts to cut through it.
4. In terms of maintenance, it's important to clean the bench, stops, blade guard and remove sawdust and wood chips from your saw regularly. 
5. Remember to clear up your workspace as well: clean the floor regularly to avoid slipping or tripping.