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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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Drawing Aids
All about drawing aids. Format: Text/Image
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Creating Selections from Image Masks
This simple 7-step tutorial describes the best method for using the images supplied in the CADTutor Image Bank. Format: Text/Image
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Stage 2: Create Landform Mesh
This tutorial takes AutoCAD groundmodel data and uses it to create a landform mesh in 3ds Max with Quickscape. Format: Text/Image
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Multi/Sub-Object materials
A Multi/Sub-Object material is a container for a number of sub-materials. This type of material is used when you need to assign different materials to different parts of an object and is used in infrastructure and environment projects mainly for objects such as benches, tables, lamposts, buildings etc. This tutorial works through a number of examples. Format: Text/Image
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Transforming Objects
Transforming objects means changing the position, size or number of an object without altering the integrity of the geometry itself. MAX offers a host of transformation tools to do these tasks. This tutorial gets you started. Format: Text/Image
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Preparing an AutoCAD drawing for 3D
This tutorial explains the main issues to consider when drawing in AutoCAD and preparing a drawing for use in 3D work. 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.
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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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29th December 2025 to 4th January 2026
This week's image is by Alex Moiceanu
Software used: AutoCAD 2012
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Last Week's Image
Last week's image is by Noahma
Software used: AutoCAD Architecture 2009
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Two Weeks Ago
This image is by lulumara
Software used: Solidworks 2009
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Three Weeks Ago
This image is by Dorian
Software used: AutoCAD 2008
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
AutoCAD Expert
Are you an expert in AutoCAD? Well according to Autodesk you aren't, well not unless you tell the program otherwise. The EXPERT system variable (default 0) can be changed so that annoying "Are you sure?" commands will go away. Here is the list and what they do:
- EXPERT = 0
- Issues all prompts normally.
- EXPERT = 1
- Suppresses "About to regen, proceed?" and "Really want to turn the current layer off?"
- EXPERT = 2
- Suppresses the preceding prompts and "Block already defined. Redefine it?" (BLOCK) and "A drawing with this name already exists. Overwrite it?" (SAVE or WBLOCK).
- EXPERT = 3
- Suppresses the preceding prompts and those issued by the LINETYPE command if you try to load a linetype that's already loaded or create a new linetype in a file that already defines that linetype.
- EXPERT = 4
- Suppresses the preceding prompts and those issued by UCS Save and VPORTS Save if the name you supply already exists.
- EXPERT = 5
- Suppresses the prompt, "That name is already in Use, redefine it?" issued by the -DIMSTYLE Save option when you supply the name of an existing dimension style.
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.