I’m building a garage/workshop, and the guys that did my slab were pretty terrible. The slab is structurally sound, but the surface finish is ass. Also, they totally ignored the drawing that showed where the in-slab electric conduit for the lift is supposed to go, so one end of it wound up OUTSIDE the building.
Enter the rotary hammer. I snapped a couple chalk lines that showed the edges of the conduit, then measured where the wall is going to be and went to drilling. 5 minutes later, I’ve got a fish tape running from inside where the wall will be to where the lift will be. I’ve got a 7/8" hole to pull wires through, so that should be more than enough for the lift. My welder uses smaller cable than that and it pulls WAY more current.