Wet cutting keeps the blade cool and puts less stress on the blade. Wet cutting also eliminates dust concerns because the water flow stops dust from becoming airborne. Dry cutting uses specific blades built to handle heat without needing cooling. Dry cutting is best for straight cuts only and produces a lot of dust, so operators will need safety gear to prevent dust inhalation, which can be dangerous. Wet cutting will be the best option if you need to make precise, curved cuts and do not want to deal with dust. For shorter projects where efficiency trumps precision, dry cutting will do.