1. Look at the size of the engraving machine
2. Second, pay attention to the spindle motor of the engraving machine
3. The third is the choice of the control mode and speed of the engraving machine
4. Pay attention to its guide rails
5. It is the accuracy problem of the engraving machine. The small-format machine engraves 1mm Chinese characters, or the large-format engraving machine engraves 1.5mm small characters, which must be seen very clearly under the magnifying glass.