No, I don't change any settings.
Its the same material, same photo, same dpi...
That said sometimes you need to compensate for variation in material. Harvey's numbers: double the power, 20% darker image; worked on one piece that was giving me problems, but I already had the base settings worked out.
Only difference is engraving the whole picture vs. a smaller, but representative, part of it.
If you change the engraved resolution the speed/power will also change.
If you change the magnification level additional photo manipulation may be required to optimize clarity of detail. (This is part of getting a feel for it.)
I am attaching a test pattern I've used on occasion. Engrave at a dpi that matches the image. Change the dpi to scale, don't resample. I'll print it at various speed/power levels, at each dpi, to help get a feel for a new material. Again it's small so it doesn't use a lot of material. I then use a 12x or a 30x magnifier to view the results. Its interesting how much detail you can't get.
Ken Devory Jr. |