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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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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: 1 minute ago
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Drawing Aids
All about drawing aids. Format: Text/Image
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Project Overview
This tutorial describes the process of creating a 3D infrastructure and landscape scene from an AutoCAD design drawing using MAX/VIZ and Quickscape application software. Format: Text/Image
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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
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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
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AutoCAD 2010: The User Interface - Part 1
This video tutorial takes you on a guided tour of the AutoCAD 2010 user interface. This is the best place to start for beginners. Running time: 3min 56sec Format: Video
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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
Insert a copy of the block at the specified point. CopyRenameBlockV1-5.lsp /Lee Mac/
by Nikon
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Parametric wardrobe, kitchen & cabinet automation in AutoLISP — anyone working on similar?
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Help to Modify Existing Line Annotation LISP
by KraZeyMike
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Having a dumb issue here that Im hoping someone can fix
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Retro Error Backtrace
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MycadHELPER
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This Week's Hot Topics
Insert a copy of the block at the specified point. CopyRenameBlockV1-5.lsp /Lee Mac/
by Nikon
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Retro Error Backtrace
by Cliff
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Having a dumb issue here that Im hoping someone can fix
by TimC
6 replies
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Help to Modify Existing Line Annotation LISP
by KraZeyMike
3 replies
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MycadHELPER
by ACADUI
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Parametric wardrobe, kitchen & cabinet automation in AutoLISP — anyone working on similar?
by zenmar
1 reply
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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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8th – 14th June 2026
This week's image is by Jay C
Software used: Revit
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Last Week's Image
Last week's image is by khama
Software used: AutoCAD 2006
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Two Weeks Ago
This image is by Steven Leech
Software used: AutoCAD 2009
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Three Weeks Ago
This image is by JRevit
Software used: Revit 2009
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
Command line in a window (F2)
The command line can be very useful, especially for beginners because AutoCAD often gives useful prompts which helps when learning how to use some of the more complicated commands. The command line is also used by AutoCAD to report information back to the user, but sometimes that information may run to several lines of text, and disappear from view. A good example of this is the Distance command (you can run this from the keyboard by typing DIST). The problem is that by default, the command line is only two lines high and so if you use the Distance command, you don't even see the distance reported to the command line.
One way round this problem is to increase the depth of the command line to show more lines but this takes up valuable drawing area. A better solution is to display the command window using the F2 key on the keyboard.
As you can see above, the command window also allows you to scroll back through the command line so that you can review your recent drawing history.
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.