CNC woodworking engraving machine precision low what reason be?

Many users have the woodworking engraving machine precision is more and more low, engraving depth is not neat, then what's the reason that cause, let's about how to avoid this situation? Actually many reasons is our own bad habits, to make the wood carving machine has always insisted on the condition of the high precision: first time finishing screw, avoid with foreign body on the screw, screw in the equipment is very important, he resolution on the precision of the machine, and screw also play an important role in the process of transmission is not just finishing screw and is finished homework should be timely finishing mesa, this supply for the next operation is convenient, the finishing around the guide and guide data chip, in order to avoid the debris trouble making machine present card machine in the process. And attention should be paid to the motherboard is the controller of woodworking engraving machine, to organize the dust inside the in time, cause the paralysis of the entire motherboard due to dust.