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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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Scaling Images
How to scale images in AutoCAD. Format: Text/Image
Last visited: 1 minute ago
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Basic 3D and Surface Modelling
Although AutoCAD has a number of commands for creating special 3D objects, a lot can be achieved by changing the properties of basic 2D objects like polylines. This tutorial provides a basic introduction to creating and viewing 3D objects. Format: Text/Image
Last visited: 1 minute 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: 1 minute ago
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Creating a Walkthrough
This tutorial shows how to create an animated walkthrough of your AutoCAD 3D model using 3DS MAX 5. All you need to start is an AutoCAD drawing with some 3D content. The end result will be a .AVI file which can be viewed on any Windows PC. Format: Text/Image
Last visited: 8 minutes ago
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The Material Editor
The Material Editor provides functions to create and edit materials and maps. This tutorial is a basic introduction to the options available. Format: Text/Image
Last visited: 9 minutes ago
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Paper Space Exercise
AutoCAD's paper space mode is a bit like having a page in a scrapbook onto which you can paste different views of your AutoCAD drawing. This whole page can then be plotted. This exercise demonstrates how. Format: Text/Image
Last visited: 13 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
Currently Active Topics
5 CAD Commands That Can Save You More Time Than You Think
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annotative text/leaders
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Why do plotted lineweights sometimes differ from what you see on screen?
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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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9th – 15th November 2026
This week's image is by Titi95
Software used: Modelling and rendering in AutoCAD
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Last Week's Image
Last week's image is by arjun_samar
Software used: 3ds Max with V-Ray and Photoshop
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Two Weeks Ago
This image is by shift1313
Software used: SolidWorks 2010
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Three Weeks Ago
This image is by Oppie
Software used: AutoCAD 2011
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
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.
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.