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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
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AutoCAD 2010: Getting Ready for 3D
This video tutorial describes how to prepare the AutoCAD 2010 user interface (UI) ready for a 3D drawing project. Running time: 2min 23sec Format: Video
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AutoCAD 2010: The User Interface - Part 1
This video tutorial takes you on a guided tour of the AutoCAD 2010 user interface. This is the best place to start for beginners. Running time: 3min 56sec Format: Video
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AutoCAD 2010: Ribbon Basics
This video tutorial introduces you to the AutoCAD 2010 ribbon and demonstrates the various options you have when working with it. Running time: 5min 49sec Format: Video
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AutoCAD 2010: Starting a Command
This video tutorial demonstrates some of the methods for starting a command in AutoCAD. Running time: 2min 42sec Format: Video
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AutoLISP Quick Start
This tutorial is designed to help AutoCAD users get to grips with AutoLISP quickly. It demonstartes how to create AutoLISP routines from a standing start. Format: Text/Image
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Keyframe Animation
This tutorial gives a basic but comprehensive introduction to keyframe animation in Bryce and introduces some key concepts in animation generally. Format: Text/Image
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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
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[Free LISP] Auto-mark revision clouds for design changes — compare two regions in same DWG
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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
Update the Source File Block Edits on the Tool Palette
From: AutoCAD Productivity Articles #139
Originally published: April 2015
Throughout the archives of Michael's Corner you will find dozens of references to tool palettes, including the key component of blocks on a tool palette: the Source File. [Coverage of the Block Source file was originally presented in March 2006.]
Scenario: You add this armless chair to the source file and put several chairs in a drawing… then you update the chair in the source file with arms.
Problem: The chair on the palette now displays arms, but the chairs in the drawing have no arms, soooo…
How to Update Drawing Blocks from the Source File
After modifying the block in the Source File, right-click on the related block on the tool palette, then click Update tool image.Now, in the drawing containing the blocks that were in the former armless state, go to the tool palette, right-click on the updated block image, then click Redefine… and all those chairs now have the updated condition with arms!
See all the articles published in April 2015
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.
Image of the Week
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23rd – 29th March 2026
This week's image is by shift1313
Software used: SolidWorks 2009
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Last Week's Image
Last week's image is by f700es
Software used: SketchUp
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Two Weeks Ago
This image is by H_3dmax
Software used: 3ds Max 2008
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Three Weeks Ago
This image is by Lazer
Software used: Inventor and Solid Edge
Gallery of Work
Over the years, our forum members have contributed hundreds of images, showcasing their amazing work. The images above are just a small selection that demonstrate the wide range of project types our community is involved with. Take a look at our gallery to see all the images published in the last 12 months.
Tip of the Day
Who is using that file?
If you are unable to open a drawing for editing (read-only) because it is in use, and want to find out who has it open, start a new drawing, or go to a drawing you have open and type WHOHAS at the command line. Browse to the drawing file using the file dialog box and double-click the filename (or select the file and click the Open button). A small message box will appear, showing who is using the file, the name of their PC and when it was opened.
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.