I’m interested in learning more about the DPI setting in Lightburn and how it affects output. I’ve noticed (through trial and error) that setting the DPI too high can result in wavy engravings that look terrible. I started at 500 DPI and worked back down to around 190 DPI which seems to work well. I believe the Lightburn default is 254 DPI.
That said, I still will often see portions of my job shift along the X axis during engraving (happens most of the time, not all of the time). Below is an image of a gift that I recently made for a friend. I engraved this at 80 mm/s, 60% power, and 190 DPI…and I believe the image (a .JPG file) was saved at 300 DPI. Note how the entire job shifted to the left (see the red circles) at the bottom of the flag. All of my hardware is right and tight and I can make this issue more pronounced by increasing DPI.
So the question is, is the DPI setting in Lightburn a set it and forget it thing…or should it be adjusted relative to the size and DPI of the image being engraved? Is there a process for determining what the precise setting for this should be? Is there something else I should be looking at? I’m running a K40 with C3D board…let me know if I can provide more detail. TIA.