The bulk of the work for a new slab is in the excavation and form building. If you have to level a sloped site or bring in a lot of fill, hire an excavator for a day to help prepare the site. Then ...

HOW TO BUILD A ROUTER SLED / SLAB FLATTENING MILL ️ TOOLS AND SUPPLIES IN THIS VIDEO: - Freud 1 1/4" bit - Amana surfacing bit (slightly bigger/better for flattening) - 150 lb mag switches - Bosch ...