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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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Uploading Files with WS_FTP
This tutorial guides you through the process of uploading your website files to a web server using the WS_FTP client. Format: Text/Image
Last visited: 4 minutes ago
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Creating Custom Bitmap Materials
This tutorial demonstartes how to create your own bitmap based materials using Photoshop and AutoCAD. Format: Text/Image
Last visited: 5 minutes ago
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Entering Survey Data using AutoCAD
These techniques apply to basic CAD programs such as AutoCAD, IntelliCAD, etc. If you have a civil/survey program or add-on, such as Land Desktop, SurvCADD, Eagle Point, etc., then there are built-in tools for entering lines and curves. Format: Text/Image
Last visited: 5 minutes ago
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Creating an Image Rollover
This tutorial demonstrates the best way to create image rollovers in Microsoft FrontPage. It also shows some variations on the basic technique along with some examples of how it could be used. Format: Text/Image
Last visited: 8 minutes ago
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Map Modifying
Map modification takes place in one of two places: either on the Modify Panel with the use of one of two modifiers, or in the Material Editor as part of the material parameters. This tutorial guides you through the options. Format: Text/Image
Last visited: 8 minutes ago
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Site Layout Exercise 2
This exercise is designed to progress your skills in 2D drafting and to test your understanding of layouts and printing to scale from paper space. Format: Text/Image
Last visited: 11 minutes ago
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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multiple file selection dialog box using lisp & powershell
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5 CAD Commands That Can Save You More Time Than You Think
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Do you really need a separate DWG for every revision?
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Why does SLICE sometimes create an unexpected result on a 3D solid?
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This Week's Hot Topics
Issues with MText in different colours
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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
Original Dimension Value
From: AutoCAD Productivity Articles #143
Originally published: December 2015
Since the dimension text of an associative dimension is Mtext, double-click anywhere on an associative dimension and you can add additional information… or modify the value to what you want.

But what if you want to put the dimension back to the original value?
Insights:
If you reposition an extension line origin grip of a dimension and the value doesn't change, the original value was modified.
If you double-click a dimension and the edit box has a white background — not blue — the original value was modified.

Solution:
Double-click the dimension, then put the less-than and greater-than characters in the dimension box, like this… <>
The original value will be restored.
See all the articles published in December 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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21st – 27th September 2026
This week's image is by Dorian
Software used: AutoCAD 2008
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Last Week's Image
Last week's image is by helraiser81
Software used: 3ds Max and V-Ray
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Two Weeks Ago
This image is by papagyi
Software used: 3ds Max and V-Ray
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Three Weeks Ago
This image is by CADken
Software used: SketchUp and AutoCAD 2010
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 2007 - Where's my old XREF Manager?
A lot of people using AutoCAD 2007 and above don't like the new XREF Manager, so here's a simple way to get the old one back.
AutoCAD 2007 introduced a new way to manage XREFs and to bring up the "old" XREF Manager, you have to type CLASSICXREF at the command line. Well, if you want things back the way they were and use the classic XREF Manager as the default from the keyboard and from the menu, a few adjustments will get you there…
First, go to . This command opens the ACAD.PGP file in Notepad. This is where all the keyboard shortcuts are defined.
Next, scroll down until you see XR (or use ), change the value from *XREF to *CLASSICXREF and save (). Close Notepad and return to AutoCAD. Enter the command REINIT, check the "PGP File" checkbox and click "OK". That fixes the keyboard so that next time you type XR, you'll see the old manager and not the new one.
To change your Menu, type CUI at the command line. In the "Customizations in All CUI Files" pane of the "Custom User Interface" dialogue, go to and click on it once to highlight it.
Now, in the "Properties" pane, change the "Macro" setting from ^C^C_externalreferences to ^C^C_classicxref, click "OK" to save the changes and you're done.
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.