In the process of making CAD drawings, there will be many operations such as deleting, redrawing, making blocks, deleting blocks and so on. Inevitably, the results of some operations are not needed in the end, but these operations will still be saved in the drawing file, which leads to the phenomenon that the file takes up more space. The following will introduce a simple and practical method to reduce the size of the finished drawing file.

First, the use of tools: Auto CAD2007 (take this as an example here)

Second, the method steps:

1. Double-click to open the file to be shrunk. In the figure below, we see that the drawing size is 755KB:

2. Then enter "pu" in the command line, regardless of case, and click "Enter":

3. Next, a "Clean Up" dialog box will pop up, and check "Confirm each item to be cleaned up" and "Clean up nested items" below. , click Clear All:

4. In the pop-up "Confirm Cleaning" dialog box, the contents to be cleaned in each cleaning step will be displayed. If there is something you definitely don't want to clean up, you can click "No". Generally speaking, "strike" is everything:

5.CAD performs cleaning operation. After cleaning, return to the "Cleaning" dialog box and click "Close":

6. Click Save, and then close the drawing. Please be sure to save it:

7. Where the drawing was originally stored, you will see that the drawing has been reduced:

Third, summary:

1, this method can play a very good cleaning role for most drawings, but some drawings are really large and contain a lot of content, which will lead to a larger size after cleaning and can be compressed before saving;

2. Backup files "example. Bak "clean and save and generate" example. Dwg "can be changed to" example. Dwg ",it can become the original uncleaned drawings.

Fourth, pay attention to:

1. The fourth step doesn't need much attention. You don't have to worry about cleaning up what you need. The cleaning process will only clean up the content that is not included in the graphic display part.

2. After clicking "Yes to All", CAD carries out a series of continuous cleaning operations, each cleaning will only clean up one content, but each cleaning will be particularly fast, and you will find that there are always words flashing in the command line. This is the process of cleaning, you don't need to worry.

Please keep it after cleaning.