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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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AutoCAD to Photoshop
This tutorial demonstrates a number of workflows from quick and simple to high quality. Format: Text/Image
Last visited: less than one minute ago
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Direct Distance Entry
The essential way of working with 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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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: 5 minutes ago
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Creating Seamless Tiles
This tutorial shows you how to create perfectly seamless image tiles in Photoshop. The image tiles are perfect for creating image based materials in AutoCAD, MAX or Bryce. Format: Text/Image
Last visited: 5 minutes ago
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AutoLISP Quick Start
This tutorial is designed to help AutoCAD users get to grips with AutoLISP quickly. It demonstartes how to create AutoLISP routines from a standing start. 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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25th – 31st May 2026
This week's image is by Steven Leech
Software used: AutoCAD 2009
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Last Week's Image
Last week's image is by JRevit
Software used: Revit 2009
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Two Weeks Ago
This image is by Lazarus
Software used: AutoCAD 2009
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Three Weeks Ago
This image is by abstracted
Software used: Inventor and 3ds Max
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
2D Drawings from your 3D Models
Over the years, there have been various methods of creating 2D drawings from 3D models in AutoCAD. In the early days, we used export to DXB, a file format that is no longer supported. Then came the FLATTEN command. Now, there's a new command that's better than previous methods.
The FLATSHOT command creates a 2D block object of any view that includes 3D solid objects. There are a number of options including show/hide obscured lines and independent control over the colour and linetype of foreground and obscured lines. Flatshot works by projecting the lines of your current view, not UCS, onto a plane. This is a little more versatile than Flatten and doesn't seem to skew the dimension of the object, which Flatten is notorious for. It also has the advantage of leaving the original object as is. The only downside is that it seems to have problems with perspective views. Parallel projection views work perfectly.
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.