A system for consolidating and sorting event data include a computing platform communicatively coupled to a computer readable medium and a network. The flow-through end of the spool has a narrow flat edge oriented perpendicularly to the axis of the spool, with an inside surface of the spool forming a 55 to 90 degree angle with the flat edge, and meeting the flat edge in a sharp corner. The method trains a classifier based on the training set, and outputs the classifier.