If you use the woodworking engraving machine for a long time, you will inevitably find that it has a touch of sound or a sharp metal friction sound when you turn it on. You will also find that there are a lot of wood chips in the pores. In this case, the machine is actually reminding you to do maintenance work. The tools before maintenance should be prepared, such as universal needle oil, such as small brush and needle-nosed pliers, and a screwdriver and cross. When the maintenance of the woodworking engraving machine is officially carried out, the first step should be to unplug the power cord of the machine to ensure the safety during maintenance. Then remove the plastic sheath of the wood engraving machine and re-select the cross screwdriver to reverse At the hour hand, remove the two screws. Then use the needle-nosed pliers to remove the internal carbon brush for cleaning. To clean the carbon brush, use a brush to ensure that the dust on the carbon brush is cleaned. Finally, use the universal needle. The car oil can be used to lubricate the laundry equipment.