In the workflow
Why Bidirectional scanning matters
It can reduce job time, but mechanical alignment at a given speed must be correct or alternating rows may appear offset.
Practical check
How to evaluate it
Engrave a small alignment pattern at the intended speed in both scan directions. Alternating-row offsets point to motion calibration rather than an image-preparation problem.
Go deeper
Laser Engraving DPI and Line Interval Explained
Learn the DPI and line interval relationship, calculate output pixels, avoid overlapping scan lines, and preserve exact size in a photo workflow.
Read the complete guide