In order to build the standard 2D engineering drawings,a method that the scale factor is properly applied in the program of parametric design is provided.

This paper introduce several methods and techniques of making engineering drawing which are applied in the software of AutoCAD.

Several engineering sub-drawings, which scanned from a big engineering drawing, must be mosaic into an integrated one.

In order to reuse the CAD data efficiently, the paper presents an effective method for extracting mechanical part information from existing mechanical engineering drawings produced by CAD software.

First, reconstruction processes are extended to engineering drawings containing semi section or full section views.

Some questions on the work of drawing the engineering draft;

In this paper particular introduce how to install the drivers,process plot set of plotter and the method and step of output AutoCAD engineering draft.

Feature Recognition and 3D Reconstruction of Engineering Drawing Based on Engineering Semantics;

The identification of the features based on engineering semantics involves visible identifications of feature volume and invisible ones.

This paper introduces divided conquer for the first time and systemically puts forward 3 levels divided conquer (description mode divide conquer, projection relation divided conquer and dimension constraint divided conquer)of practical engineering drawing engineering semantics.