You could strap a laser diode to your machine and use the PICengrave software as shown in the video. Two things come to mind though: Extraction and air blast. MDF and wood, smoke when being etched, you will need to have a good extractor fan and some sort of hood. The air blast ensures the laser lens stays clean but also that your piece does not catch fire. All doable, just remember, do not stare into the laser with your one remaining eye :D