Looking for a computer visualization tool for a #DIY #carpentry project I will do in a couple of months : hardwood #floor install in a 150+ year old building with a settled stone foundation. Want to get the #subfloor at least flat if not level. Have a 360 degree laser level and target and quite large straight edge. One room with kitchen island. 3 door openings would define unchangeable points of the plane. Graph paper good enough? Still planning. #flooring #oldhouse #3dmodeling #vermont