The several factors depend on the engrave accuracy.

 There are many elements depend on the engraving accuracy , one of the most significant are the three  as follows:

1: The way of delivery of engraving machine : one is the  ball screw made in Japan ,the other is precision rack made in Taiwan. what  largely  distinguish decide the engraving accuracy is the way of delivery.

2: The good installment-skill applied to some extent depend on that  aspects.

3: The bigger the spindle power is , the  more accuracy the machine engraves.