About 3 years ago I used DOT mode to cut shapes in polyethylene foam packing material. It was not entirely successful because the bottom of the cut opend up witth a significant taper. My previous attempts were based on the traditional approach of experimenting with parameters to try and find values that minimised the taper.
During that intervening period I have come to understand fully the relationship between the laser beam, the lens and the way light interacts with materials. I no longer randomly hunt for successful cutting parameters but start off by trying to understand the properties of the material. From there I try to zoom in on lens and beam configurations that are sympathetic to the needs of the material.
This is a fairly quick revisit to cutting PE, to see if my new knowlegede can help decode the cutting mechanism that causes PE to cut in such an uncontrolled manner.
30 янв 2022