Learning CAD experience, using CAD software experience

The following is very detailed for you.

1. The use of 0 layers. A lot of people like to draw on layer 0, because layer 0 is the default layer, and white is the default color of layer 0, so sometimes it looks like there is a white flower on the screen. It is highly undesirable to do so.

It is not recommended to draw arbitrarily on layer 0. Instead, it is recommended to define blocks. When defining a block, set all elements to the 0 layer before defining the block.

In this way, when you insert a block, the block is that layer when you insert it.

Second, on the basis of sufficient, the fewer layers the better. Whether it is architecture or mechanical and electrical majors, all the elements on the drawings can be organized according to certain rules. For example, in the floor plan of the architecture major, the layers are defined according to columns, walls, axes, dimensions, etc., and then when drawing, the elements should be placed in the corresponding layers.

As long as all the elements in the drawing can be properly categorized, the foundation of the layer settings is laid. But is it better to classify primitives as finely as possible? Not really.

Therefore, the first rule of layer setting is to use as little as possible. In general, it means two things: adequate and streamlined.

The situation of each major is different, and you can figure out for yourself how it is relatively the most reasonable.

3. The setting of line shape and line width. Before setting the lineshape of the layer, we need to mention the ltscale command. Generally speaking, the setting value of ltscale should be set to 1, so that there is no confusion when communicating drawings.

There are three commonly used line shapes, continuous lines, dotted lines, and dashed lines. Whether a drawing is beautiful and clear, the setting of line width is one of the important factors, which is related to whether it is hierarchical. In a single picture, there are three types of line widths and line shapes, which is very rich.

The printed drawing, at a glance, can also distinguish different types of elements according to the thickness of the line, such as walls, doors and windows, and labels.

Therefore, when we set the width, we must be clear about the thickness. Another point to note is that there are two specifications for drawing, one is to print according to the scale, at this time, our line width can use this thickness specification. The second is that if the A3 format is not printed to scale, the line width should be set one size smaller than the scale, for example, so that the small image can look clear and distinct.

CAD is the English abbreviation of Computer Aided Design and Manufacturing.

You can take a look at the experience, some introductory skills, etc., in fact, the main function used is drawing + modification + annotation, mastering these, the basic two-dimensional drawing should not be too much of a problem: basic CAD introduction.