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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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Adding Sunlight to your Drawings
This tutorial takes you through the steps required to add realistic sunlight effects to your 3D model. Format: Text/Image
Last visited: less than one 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: 2 minutes ago
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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
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Exterior Lighting
This tutorial shows you how to set up a standard Sunlight System using a target direct light and including ambient light and standard shadow map settings. 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: 6 minutes ago
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AutoCAD Productivity
Dual Dimensions in a Dimension Style
From: AutoCAD Productivity Articles #147
Originally published: August 2016
‘Alternate Units’ doesn't always mean Metric.
To follow along, set the current Dimension style to one you like. The following exercise begins with a Dimension Style with the Unit format set to Architectural on the Primary Units tab.
How to Display Ft′-In″ as well as Inches
Launch the Dimension Style dialog box [Alias: D], click New and enter a name, then click Continue.
Click the Alternate Units tab.
In the upper left corner, put a check in the box for Display Alternate Units.
Set the Unit Format to Fractional.
Note: I would suggest you set the values for the Precision and the Round off to the same values as those on the Primary Units tab.
Set the Multiplier for Alt Units to 1.00.
In the Suffix edit box, put the inch marks ( ″ ).

The last setting you may want to make is to set the Placement feature radio button (under the preview) to Below Primary Value.

Click OK, Close the Dimension Style dialog box, then check out your new dimension!
See all the articles published in August 2016
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.
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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.
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