My neighbor had a Milwaukee And pointy bit. I might be able to get a pic tomorrow . It was kind of a complicated pieced together slab. Bunch of work over work and we still are not really to the end. I dont want to shake the place apart. A couple worker bees went to town on it this morning, they got another day, they mule it out and clean up well. There are no rods or mesh in it, it probably cures slow and well though. Its got some filled blocks, its got all kinds of stuff and we are pretty savvy but are still wondering what all the steps were including the last owner building a wood floor over the whole thing.