Should I match the DPI of a raster image to LPI in Engrave settings?

[jbmanning5]

Preparing a Photo for Raster Engraving (NOT NECESSARY FOR GLOWFORGE)

It’s commonly stated DPI = LPI * 2, or DPI / 2 = LPI. What’s not stated is that those formulas are for suggested resolution of an image. What it really should say is that the suggested resolution for printing is Target LPI * 2 = DPI of your image. And that’s not even accurate… it should be PPI rather than DPI, though the two terms are really used interchangeably anymore: PPI is input. DPI is output. For example, the wide-format canon printer I have here has a max print resolution of 2400 X 12…