Adjust blade depth to your stock thickness

For cutting and routing sheet goods, use sawhorses that can be topped with sacrificial 2x4s. If you're using other types of sawhorses, attach replaceable 2×4 tops with fasteners placed well clear of the saw blade. Set the blade or bit to cut no more than ³⁄₁₆ " into the sacrificial 2x4s.
—from the WOOD shop