I’ve seen a few projects where people used there glowforge to cut EVA foam but I haven’t been able to find if anyone has tried engraving it.
another example but on the k40:
Hi. I cut and engrave EVA foam all the time. Its leaves a big mess inside your vent hose and i recommend you wipe your machine of the ash from the foam. You can also rinse off the foam piece after its done engraving under water to get off the extra ash.
What settings did you use for the foam?