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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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Dimensioning
This tutorial describes the options and commands available for dimensioning drawings and how to use them. The correct use of AutoCADs dimension tools is the key to producing clear and concise measured drawings. Format: Text/Image
Last visited: less than one minute 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: 4 minutes ago
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Modifying Objects
This tutorial runs through all of the modify tools, demonstrating practical examples in each case. Format: Text/Image
Last visited: 5 minutes ago
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Stage 8: Assign Materials and Sky background
When surface and edge modelling has been completed and the lighting has been setup correctly, materials can then be assigned to surfaces and edges. This tutorial guides you through the process. Format: Text/Image
Last visited: 5 minutes ago
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Standard mapped materials - Image Maps
Image maps are applied to materials for many different purposes. They have to be scaled and positioned on the object using a UVW Map modifier or a Map Scaler modifier. This tutorial steps you through the process. Format: Text/Image
Last visited: 6 minutes ago
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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
Last visited: 6 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.
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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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24th – 30th August 2026
This week's image is by Red333
Software used: AutoCAD 2009
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Last Week's Image
Last week's image is by RODDY1
Software used: AutoCAD 2009
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Two Weeks Ago
This image is by papagyi
Software used: 3ds Max 9 and V-Ray
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Software used: SketchUp and V-Ray
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
Selection Preview Cycling
Making positive selections is much easier now that AutoCAD highlights (previews) objects as you mouse over them. However, it can still be difficult to select the right object when drawings become complicated with lots of overlapping objects. Fortunately, AutoCAD allows you to cycle through all the overlapping objects under the cursor.
All you need to do is hold down the Shift key and then repeatedly hit the Spacebar (Shift + Space). Each object under the cursor will be highlighted in turn and you can easily pick the one you want.
You can use a similar technique to cycle through sub-objects such as faces and edges on 3D Solids. To cycle through sub-objects, hold down the Control key and hit the Spacebar repeatedly (Ctrl + Space).
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.