How To Level Concrete Slabs | Family Handyman
Grinding concrete also releases fine silica dust, which can cause health problems. Always wear a NIOSHcertified N95rated respirator. Check the seal with this easy test: If you can exhale and inhale sharply without air escaping, you're good to grind. If you have facial hair, even a bit of stubble will ruin the seal. Go ahead and shave—it will grow back!