I did do a 10LPI test. It was… interesting, but I wouldn’t say conclusive.
1"grid on cardboard.
Here is a picture of the engrave lines around the center of the image.
Bottom left.
There is a weird anomaly that happened if a few places. The engrave lines bounced around (see image below). This is significantly wider that what was depicted in the scan. I’m curious if it is caused by the 10LPI setting, which is why I’m going to do this test again.
