Electric drill (Electric Drill). Use and maintenance. 1. a secret drill, always sharp. 2. unplug drill and drill the handle head mum, that after every use. 3. grease the gear and catch tha drill once a month. 4. Select the drill, with sharp teeth and a beak that is เลี้อย suitable for the job. 5. Select the speed to suit the type of material and the size of the hole to be drilled. 6. do not use tool extract scrap metal while drilling. 7. If the drill hole punch clogged with should be closed immediately, sawit. 8. before drilling, according to the Center for cast iron should be hammering the desired location before drilling. 9. how to handle tightly. 10. should both cut ends to start cutting in all the right spot.
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