Output for engraving

I'm a signmaker and I would like to create a file which can be cnc engraved into clear acrylic. I would like to create awards or plaques by having the clear acrylic cut with a basic configuration and then add my printed graphics (recipients etc). I'm looking for advise (or if it's possible) on creating a file and sending to a wholesaler to cut. Do i just send a black and white eps file? The one wholesaler I contacted said they use a 1/8 bit (if that helps)