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AutoCAD 2012 & AutoCAD LT 2012 Bible

The most comprehensive AutoCAD book around!

AutoCAD 2012 Bible

Stretch a circle with grips and specify the radius or change in radius

You can easily stretch a circle with grips. To specify the new radius, just enter it on the command line (or in the Dynamic Input tooltip). But suppose the information you have is the difference between the two radii?

For example, let’s say that your circle’s radius is 1.825 and you know that you have to [...]

Draw minor and clockwise arcs

When you draw an arc, the specifications that you provide may define two, rather than one arc — one minor (less than 180 degrees) and one major. The ARC command always draws the minor arc by default, in the counterclockwise direction.

For example, if you specify the Start, End, and Radius options, [...]

Create a circle with a width

There are various reasons that you might need to create a circular object with a specific width, such as matching cable widths, or showing cross sections. I’ve come up with 4 ways to go about this. The right one for you will depend on your needs.

Fit a polygon

An excellent method uses the POLYGON command [...]

Tutorial: Draw a 3D threaded bolt

A common, but difficult task, is to create a threaded bolt. I recently got a request for more 3D tutorials, so here you go. This tutorial assumes an intermediate knowledge of AutoCAD.

I rummaged around a box of miscellaneous junk and found this bolt. You can see that it’s about 3 inches long.

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