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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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Object Snap
A tutorial giving an overview of all the AutoCAD object snaps (osnaps) with some worked examples. The tutorial also covers the use of temporary tracking points and object snap tracking. 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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Stage 6: Lighting and Shadows
Lighting outdoor scenes involves the setup of a Sunlight or Daylight system, together with ambient light. This tutorial uses Quickscape Sunlight and Shadows to automatically setup a Sunlight System with some environment settings and including the use of a Quickscape Light Dome for added natural ambient light. Format: Text/Image
Last visited: 2 minutes ago
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Using Co-ordinates
All about the use of co-ordinates in AutoCAD. Format: Text/Image
Last visited: 3 minutes ago
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Object Properties
This tutorial describes how to control the display of objects (colour, linetype etc.) using layers. It also explains what layers are and how they should be used. Format: Text/Image
Last visited: 7 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: 10 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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15th – 21st December 2025
This week's image is by lulumara
Software used: Solidworks 2009
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Last Week's Image
Last week's image is by Dorian
Software used: AutoCAD 2008
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Two Weeks Ago
This image is by mehiar
Software used: 3ds Max
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Three Weeks Ago
This image is by Titi95
Software used: AutoCAD 2014
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 Alias Editor
If you're new to AutoCAD or even if you're not and you find it difficult to remember all the keyboard shortcuts to your favourite commands like L for Line and C for Circle or even 3DO for 3DOrbit, then you need to know about the AutoCAD Alias Editor.
Enter ALIASEDIT at the command line and AutoCAD will launch a tiny application window that lists all the shortcuts in alphabetical order. As this is a seperate application, you can keep it minimised on your taskbar until you need it for reference.
Essentially, this editor simply lists the contents of the acad.pgp file where all the command aliases are stored. Those of you who are a bit more adventurous, may even like to use the Alias Editor to create your own aliases or edit existing ones.
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.