This is about the most epic pain in the ass you can get with cutting a hole in a concrete floor. There were several floors actually poured over each other (the building has seen many large remodels over the years) with the lowest layer being 2 inches of concrete poured over a fieldstone fill. What should have been a 30minute jobtook a whole day of grueling labor. Astrolounge, Concrete, construction, demolition, floor, Timelapse