After cutting pipes (cylinders) at a given angle to the plane, sometimes it is necessary to determine the resulting section. The section is an ellipse. The Excel table that we offer allows us to obtain the dimensions for constructing this ellipse in an analytical way. Enter in the yellow cells of the table the diameter of the cylinder (inner or outer diameter of the pipe), the angle of intersection, the number of points for the construction of the pattern and you instantly get the ordinates and abscissas of these points. For the convenience of constructing the pattern, it is possible to obtain the ordinates of the intermediate points. Transfer these points to the paronite or cardboard and smoothly connect them together. Section is ready. For convenience, a macro that automatically builds a section is added. Then you can print it.