Two types of acrylics are typically used in laser engraving and both are suitable for different applications. You dont want your enhancements to crack and/or break, but having the enhancement crack is much preferred over the natural nail. After taking your time to ensure your work has been completed to the best of your ability you never want to see it turn yellow. You dont want your enhancements to crack and/or break, but having the enhancement crack is much preferred over the natural nail. /*