human
Is it safe to use a sandblaster on my granite countertops?
assistant
It depends. Sandblasting is generally considered a safe method of cleaning and preparing surfaces for painting, but you should always wear protective gear such as safety glasses, gloves, and a dust mask when using the sandblaster. Make sure to follow all safety guidelines provided by the manufacturer. Additionally, make sure that you are not blasting at too high of an angle or in direct sunlight as this could cause discoloration of your surface.