CADTutor

Learn AutoCAD with our Free Tutorials

Welcome to CADTutor

CADTutor provides the best free tutorials and articles for AutoCAD, 3ds Max and associated applications along with a friendly community forum. If you need to learn AutoCAD, or you want to be more productive, you're in the right place. See our tip of the day to start learning right now!

Free Tutorials and More…

The Tutorials section provides over 100 original tutorials for AutoCAD, 3ds Max and other design applications. Michael’s Corner is an archive of productivity articles that brings you the best AutoCAD tips and tricks. Our Forum is a lively community where AutoCAD users can ask questions and get answers. The Downloads area provides free AutoCAD blocks, free AutoLISP routines and free images.

Tutorials of the Moment

Recently viewed tutorials

CADTutor Tutorials

Our tutorials are comprehensive but straightforward introductions to AutoCAD and related software. They are designed to help beginners get to grips with design workflows as quickly as possible. There are over 100 to choose from, some text/image based and others in video format. Whatever stage you are at in your learning, you should find a tutorial to help.

Forum Latest

Currently Active Topics

This Week's Hot Topics

CADTutor Forums

Our forum is a vibrant community of experts and beginners. The main focus is helping beginners get to grips with AutoCAD and to help more advanced users become more productive. The AutoLISP forum is one of the busiest out there, providing expert advice for busy professionals.

AutoCAD Productivity

‘Sign Language’

by Michael Beall

From: AutoCAD Productivity Articles #136
Originally published: October 2014

Infer ConstraintsSelection CyclingFor the last few versions we have seen icons next to the cursor for Geometric Constraints (left) and Selection Cycling (right), as well as the little icon for a Locked layer and the Match Properties paintbrush.

Those icons are displayed when the related feature is enabled.

Cursor Badges

But AutoCAD 2015 now has included a ‘cursor badge’ for several editing commands, such as Rotate and Erase (see figures below), along with Measure and even the Window and Crossing selection direction badges.

Badge examples

Some of you, however, may prefer not to see the new badges beside the cursor. If so, set the variable CURSORBADGE to <1>, which will disable all badges.

See all the articles published in October 2014

Michael's Corner

Between 2003 and 2016, Michael Beall (and one or two guests) wrote almost 600 articles for CADTutor. The focus of these articles is AutoCAD productivity, and although some of them are now more than a few years old, most remain relevant to current versions of AutoCAD. The article above is just one example. Check out Michael's Corner for a full listing.

Tip of the Day

Absolute and Relative Coordinates

Coordinate Interpretation
25,75 depends on context
@25,75 relative
#25,75 absolute

It used to be very simple. Enter a coordinate and AutoCAD interpreted it as an absolute coordinate. Enter a coordinate preceded by "@" (the at sign) and AutoCAD interpreted it as a relative coordinate. This simple rule changed when dynamic input was introduced and now the interpretation of coordinates is contextual. For example, when you draw a rectangle using RECTANG, the coordinate for the second point is interpreted as absolute with dynamic input turned off and as relative with dynamic input turned on. Really, try it and see.

Fortunately, there's a new coordinate prefix that forces an absolute coordinate, even when AutoCAD decides you want a relative one. Precede any coordinate with "#" (the hash sign) to force an absolute coordinate.

Today's tip is by dbroada

Missed a Tip?

Did you miss yesterday's tip? Maybe you forgot to drop by or maybe you don't visit over the weekend. If so, you can now see all the tips published during the past week. Also, if you have a tip you'd like to share with us, you can post it on our forum and if we like it, we'll publish it here.