Lots of people have, you can find their threads with a quick search like this:
https://community.glowforge.com/search?q=Foamcore
Or this:
https://community.glowforge.com/search?q=Foam%20board
Take a look at those two searches and see if that answers your real question, whatever it may be. And if in the end you don’t find an answer come on back and ask whatever specific thing it is you’re after.
Just in case it’s settings, you might want to take a look at number six on this list, it teaches you how to find the perfect settings for pretty much any material including foam board.