Categories

AutoCAD 2015 and AutoCAD LT 2015 Bible

The most comprehensive AutoCAD book around!

Use the DXF format to edit drawings

AutoCAD supports Autodesk’s DXF (Drawing Interchange File) format, which is a text-only format that contains a 2D drawing’s information. The DXF format is often used to exchange drawings between different CAD programs.

You can save a drawing in DXF format and you can open a DXF file in AutoCAD and save it as a drawing. […]

Joining Two Lines Into One

Doug Merkley contributed an AutoLISP routines that “mends” lines. It joins two lines into one, using the start point of the first line selected and the end point of the second line selected to create the new line. Download it.

Mark McDonough contributed a different type of AutoLISP file, which he calls heal.lsp. It only […]

Toggling the display of grips within blocks

By default, when you select a block, AutoCAD displays only one grip, at the block’s base point. However, what if you want to grip edit the block from some other point in the block. You can do so by displaying the grips of all the objects in the block. Jack Foster sent in a great […]

Getting back the R14 full-screen cursor

AutoCAD 2000 sets the default for the cursor at 5% of the screen. Many people like the old full-screen cursor. Abdul Nazar emails from India that you can change the cursor using this prompt.

Command: cursorsize Enter new value for CURSORSIZE <5>: 100

You can also choose Tools>Options and click the Display tab. There you […]

Let AutoCAD do the math

There are several ways you can let AutoCAD do some quick arithmetic for you when you need a distance. Let’s say you’re drawing a line and you want to use direct distance entry to specify the length. What you know is that that line should be 4.372 plus 3.925. Of course, you could use a […]

Automatically follow a linear dimension with a continued dimension

Ted Harris e-mailed me an AutoLISP routine that he uses to follow a linear dimension with a continued dimension. He notes, “one rarely enters one Dim, at least in a production environment.” I’ve updated his solution for recent versions of AutoCAD.

(defun c:dlc () (command “_dimlinear” pause pause pause) (command “_dimcontinue”) )

Add this to […]

Dimension an arc length

AutoCAD 2005 and earlier doesn’t have a way to dimension arc length, but Leonid Nemirovsky has come up with an AutoLISP routine that dimensions arc lengths very nicely. You can download it here.

Here’s the result:

Leonid has many, many more AutoLISP routines on his site, Better Than Nothing AutoLISP.

AutoCAD 2006 and later […]

Switch between Imperial and metric measurements

If you usually draw using Imperial measurements (feet and inches), you may sometimes want to enter a length in metric units. For example, if you’re designing a house in the United States, you may have certain items that were imported from Europe and are measured in millimeters or centimeters. It might be easier to be […]

Changing the Multiple options of AutoCAD commands (or sometimes you feel like a multiple option, sometimes you don’t)

AutoCAD 2005 changed the COPY command so that it defaults to a multiple option, continuing to prompt you for more locations for your selected objects. On the other hand, the FILLET and CHAMFER commands now have a multiple option, but it isn’t the default. Would you like to change the COPY command back to […]