Try to position your work area in a spot where the wind won’t blow the dust everywhere. You can also use a vacuum attachment on your grinder or lay down a tarp to catch the debris. 2. Use water to bind the dust particles. When you spray water, it not only cools the blade but also prevents dust from floating around in the air. It is important to spray around continuously and not just on the cutting blade. With these simple steps, you’ll be able to cut those bricks without making a mess!