Works for a few engravings then stops It will work for a few engravings with no problem then craps out no matter what setting you have it one . Of all the settings on the mobile device and using correctly with materials it lists it doesn’t engrave properly either . I clean after every engraving with a q tip but it doesn’t resolve the issue. If I would have known this product would be so horrible then I would have not purchased . Definitely not worth the price I paid and will not recommend product to anyone else .