Learn AutoCAD with our Free Tutorials
Welcome to CADTutor
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
-
Site Layout Exercise 1
This exercise is designed to help you test out your basic AutoCAD skills. You'll need an understanding of the Draw and Modify tools and how to use co-ordinates. Format: Text/Image
Last visited: less than one minute ago
-
ISO Paper Sizes
There has alwas been some confusion over the size of standard ISO drawing sheets with AutoCAD.The stated sizes in the plot dialogue box are not the true ISO sizes. This tutorial explains why and how to plot to scale from Model Space. Format: Text/Image
Last visited: 3 minutes ago
-
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
Last visited: 4 minutes ago
-
AutoCAD 2010: Starting a Command
This video tutorial demonstrates some of the methods for starting a command in AutoCAD. Running time: 2min 42sec Format: Video
Last visited: 4 minutes ago
-
Perspectives, Slides and Scripts
AutoCAD can be used to create a simple "walk through" of any 3D model. This tutorial shows you how. Format: Text/Image
Last visited: 5 minutes ago
-
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: 11 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
AutoLISP routine not working in German AutCAD
by Vittorio
8 replies
Last post: 13 hours ago
TAKEOFF PIPE OF DIFFERENT SIZES
by ababs
5 replies
Last post: 27 hours ago
refclose, not closingref!
by JPlanera
6 replies
Last post: 35 hours ago
Hello everyone!
by sd2006
5 replies
Last post: 35 hours ago
AutoCAD suitable laptop for a Mechanical Engineering freshman
by BenG54
4 replies
Last post: 50 hours ago
Alignment Geometry Editor Disabled
by CyberAngel
11 replies
Last post: 53 hours ago
This Week's Hot Topics
AutoLISP routine not working in German AutCAD
by Vittorio
8 replies
Viewed: 456 times
Avoiding Copy and Paste to secure clipboard data progress!
by ScottMC
6 replies
Viewed: 454 times
Visual LISP for AutoCAD
by G.Aquarius
6 replies
Viewed: 329 times
TAKEOFF PIPE OF DIFFERENT SIZES
by ababs
5 replies
Viewed: 219 times
Mtext editor changes font and size
by bustr
2 replies
Viewed: 183 times
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
“Best of” Basics: Irregular Viewport
From: AutoCAD Productivity Articles #145
Originally published: April 2016
When you need a viewport shape other than a rectangle, the first order of business is to be able to view the objects in Model Space at the desired scale. From there, you can create a polyline to essentially ‘crop’ the objects in Model space, then turn it into a viewport.
The best drawing for testing this is in the path…
C:\Program Files\Autodesk\AutoCAD 20xx\Sample\Database Connectivity
If you have AutoCAD 2014 or prior, the drawing name is db_samp.DWG
If you have AutoCAD 2015 or later, the drawing name is Floor Plan Sample.DWG

How to Create an Irregular Shaped Viewport
Right-click on a layout tab and make a new layout with a large viewport.
Double-click in the viewport, then set the desired scale from the scale list on the Status bar. You may want to start with 1/64″ = 1′-0″ so you can see all of it.
Return to Paper space and create any closed polyline, spline or circle to be the viewport.
Note: If you are creating a Polyline, you must use the Close option if it is to be converted into a viewport. If you did not use the Close option, use Pedit and select the polyline, then use the Close option.
In this illustration, I created a polyline around the perimeter of the floorplan. (Ideally, this would be on a dedicated layer on which you typically create your viewports).
On the Layout tab, click Clip.When prompted to select the ‘viewport to clip’, select the rectangular viewport.
When prompted to select the ‘clipping object’, select the polyline (or whatever object you created in Step 3, above).

AutoCAD will convert the polyline into a viewport and erase the original rectangular viewport!
See all the articles published in April 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.
Image of the Week
-
6th – 12th April 2026
This week's image is by JRevit
Software used: Revit 2009
-
Last Week's Image
Last week's image is by Steven Leech
Software used: AutoCAD 2009
-
Two Weeks Ago
This image is by shift1313
Software used: SolidWorks 2009
-
Three Weeks Ago
This image is by f700es
Software used: SketchUp
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
Easily set properties for multiple blocks in Tool Palettes
Lots of people think that when you have blocks saved in a Tool Palette, you have to each individual block to apply custom settings. What if you have 20 blocks and you want them all to have the same setting? Well, just hold the Ctrl key and highlight the blocks you want within the Tool Palette, then right click on any of the selected blocks to apply global settings.
Also, you can hold the Ctrl key to select your first block, then hold the Shift key to select the last block, then right click on any of the selected blocks to apply a global settings. Makes things much easier than one at a time.
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.