If you are looking to cut through the material, you’ll need a closed vector file (such as an .eps/.ai/.dxf/.dwg/etc)
if you’re looking to engrave only, then bitmap files (such as .jpeg/.tiff/etc) will work fine too
Please schedule a consultation so we can look through your specific file and make sure you’re ready to go!
( https://libraries.uta.edu/services/fablab/face )