are bringing a PDF into AutoCAD, there are significant enhancements to the underlay feature which makes for quicker, more fluid panning. AutoCAD is helping. AutoCAD. ®. Tutorial. Introduction. Learning to use a CAD system is similar to learning a new language. It is necessary to begin with the basic alphabet. Introduction to AutoCAD Introduction to auto cad 2d and 3d design. 53, views. Syed Javeed. 11 uploads. Recommended.
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Introduction to AutoCAD. Academic Resource Center ruthenpress.info o AutoCAD o Architecture o Mechanical o Revit o Inventor o Civil o MEP o etc. Programs, Autodesk,AutoCAD Workspaces. AutoCAD workspaces are sets of menus, toolbars and dockable windows. (such as the Properties palette. AutoCAD 2D Tutorial. - 3 -. Text and Graphics Screens. The graphics screen and the text screen are two different screens available in the drawing editor. 1.
When we need to insert blocks, we need to move to insert tab. In each tab have several panels.
This panels have similar AutoCAD tools inside them. Command Line.
We can activate tools and change the tool settings by typing in command line. Command line is also providing information what you should do next. Drafting Settings. In this section, you will find all those performance and optimization related commands which you can use in your daily workflow. PURGE This command can be used to remove unused named objects like layers, blocks and dimension styles from the drawing.
This command can also remove Defpoints layer and also layer containing objects but I would not recommend that. FILLMODE Using this system variable you can turn off or on the visibility of filled area in hatches or wide polylines by changing its value to 0 or 1 respectively. You need to regenerate the drawing using REA command after changing this system variable to see its effect on the drawing.
The default value of this aperture is 10 but depending on the complexity of the drawing you can change this value between The size of the aperture is relative to the current scale of the screen and it is not an absolute value. In the image below the red box not visible in AutoCAD is the aperture size for two values 10 and 50 respectively. This system variable also affects file size of AutoCAD drawings and its compatibility with other softwares.
By decreasing the value of this system variable you can increase its compatibility with other softwares and it also decreases the size of the CAD file but the time consumed in save operation generally increases. When you increase the value of this system variable opposite happens. You can remove this preview thereby improve the performance by changing the value of this system variable to 0.
Its default value is 1 but you can turn off this highlight effect by changing its value to 0. To use this command type LAYMCH on the command line and press enter key then select objects whose layer assignment you want to change and press enter then select any object of the layer which you want to apply on selected objects and press enter key again.
The default value of this system variable is 3 and you can change its value from 0 to AutoCAD will prompt you with the save dialogue box before closing all unsaved drawings and it will take you to start screen after closing all of the drawings.
More about drawing repair tools can be found in this related article. In the image shown below Wipeout command has been used to clean the area around the second hook. In the image below Textmask has not been applied for the first case and in the second case, it has been applied. Select any object of target layer on which you want to transfer the selected objects and press enter again.
All the objects of the selected layer will be transferred to the end layer and also the selected layer will be removed. DS Using this command you can open the drafting settings window which can be used to change settings related to status bar options like object snap, polar tracking, snap and grid settings.
When you use LAYWALK command a list with all layers appears on the screen and you can click on any of the layer s from the list and objects from that layer s will only become visible in the drawing area.
You can learn more about this command on this AKN page. Accessibility Commands These commands will help you in making your overall drawing workflow faster and efficient by eliminating the need for using many repetitive tasks.
It is always a great practice to use as fewer steps as possible to keep the drawing workflow easy and also to avoid unnecessary data in your drawing, and the commands of this section will help you in achieving just that. It is one of the great places to get blocks for your projects. FS Using this command you can select objects which are connected to the selected object in the drawing area.
This selection series continues as long as the command finds connected objects. This command is especially helpful if you want to bring multiple annotations to the front of all drawings objects without changing their draw order selectively. By hiding unnecessary objects from drawing you can get a clean work area. This command is great for making groupings of the similar type of objects like a group of similar blocks.
To know more about the design center go to the related article. The method of constructing an outline as shown in the first two examples is known as the absolute coordinate entry method, where the x,y coordinates of each corner of the outlines are entered at the command line as required. The method of constructing an outline as in the third example is known as the relative coordinate entry method — coordinate points are entered relative to the previous entry. In relative coordinate entry, the symbol is entered before each set of coordinates with the following rules in mind: The next example the fourth shows how lines at angles can be drawn taking advantage of the relative coordinate entry method.
Introducing drawing 25 Fifth example — Line tool Fig. When Line is in use, as each Specify next point: Drag the rubber-band line in any direction and enter a number at the keyboard, followed by a right-click. The line is drawn in the dragged direction of a length in units equal to the entered number.
In this example because all lines are drawn in either the vertical or the horizontal direction, either press the F8 key or click the ORTHO button in the status bar.
Close the drawing just completed and open the acadiso. Left-click on the Circle tool icon in the Draw toolbar Fig. Enter numbers against the prompts appearing in the command window as shown in Fig. The circle Fig. Second example — Circle tool Fig. Close the drawing and open the acadiso.
Left-click on the Circle tool icon and construct two circles as shown in the drawing Fig. Click the Circle tool again and against the first prompt enter t the abbreviation for the prompt tan tan radius , followed by a right-click. The command line prompts when Circle is called , R55R55 Fig.
The radius circle tangential to the radius circles The radius circle tangential to the two circles already drawn then appears Fig. When a point on either circle is picked a tip appears Deferred Tan- gent. This tip will only appear when the OSNAP button is set on with a click on its button in the status bar, or by pressing the F3 key of the keyboard. Circles can be drawn through 3 points or 2 points entered at the com- mand line in response to prompts brought to the command line by using 3P and 2P in answer to the circle command line prompts.
The Erase tool If an error has been made when using any of the AutoCAD tools, the object or objects which have been incorrectly constructed can be deleted with the Erase tool.
The Erase tool icon can be selected from the Modify toolbar Fig.
First example — Erase Fig. With Line construct the outline in Fig. An incorrect outline 2. Assuming two lines of the outline have been incorrectly drawn, left-click the Erase tool icon. The command line shows: And the two lines are deleted right-hand drawing of Fig.
Select objects Result after Erase Fig. Left-click the Erase tool icon. And the two lines are deleted as in the right-hand drawing of Fig. Undo and Redo tools Two other tools of value when errors have been made are the Undo and Redo tools. To undo the last action taken by any tool when construct- ing a drawing, either left-click the Undo tool in the Standard toolbar first corner opposite corner Fig.
Introducing drawing 29 Fig. No matter which method is adopted the error is deleted from the drawing. Drawing with the Polyline tool When drawing lines with the Line tool, each line drawn is an object in its own right. A rectangle drawn with the Line tool is four objects. A rectangle drawn with the Polyline tool is a single object. Lines of different thickness, arcs, arrows and circles can all be drawn using this tool as will be shown in the examples describing constructions using the Polyline tool.
Constructions resulting from using the tool are known as polylines or plines. The Polyline tool can be called from the 2D Draw control panel Fig.
First example — Polyline tool Fig. Left-click the Polyline tool Fig.
Note the prompts — Arc for constructing pline arcs; Close to close an outline; Halfwidth to halve the width of a wide pline; Length to enter the required length of a pline; Undo to undo the last pline constructed; Close to close an outline. Only the capital letter s of a prompt needs to be entered in upper or lower case to make that prompt effective.
Other prompts will appear when the Polyline tool is in use as will be shown in later examples. Second example — Polyline tool Fig. In the following sequences, when a prompt line is to be repeated, the prompts in square brackets [ ] will be replaced by [prompts]. Left-click the Polyline tool icon.
Third example — Polyline tool Fig. And the circle in Fig. Introducing drawing 33 Revision notes The following terms have been used in this chapter: Left-click — press the left-hand button of the mouse. Click — same meaning as left-click. Double-click — press the left-hand button of the mouse twice in quick succession. Right-click — press the right-hand button of the mouse; it has the same result as pressing the Return key of the keyboard.
Drag — move the cursor on to an object and, holding down the right-hand button of the mouse pull the object to a new position. Enter — type the letters of numbers which follow at the keyboard. Pick — move the cursor on to an item on screen and press the left-hand button of the mouse.
Return — press the Enter key of the keyboard. This key may also be marked with a left-facing arrow. In most cases but not always it has the same result as a right-click.
Dialog — a window appearing in the AutoCAD window in which settings can be made. Drop-down menu — a menu appearing when one of the names in the menu bars is clicked.
Tooltip — the name of a tool appearing when the cursor is placed over a tool icon from a toolbar. Prompts — text appearing in the command window when a tool is selected which advise the operator as to which operation is required.
Methods of coordinate entry — Three methods of coordinate entry have been used in this chapter: Absolute method — the coordinates of points on an outline are entered at the command line in response to prompts.
Relative method — the distances in coordinate units are entered preceded by from the last point which has been determined on an outline. Tracking — the rubber band of the tool is dragged in the direction in which the line is to be drawn and its distance in units is entered at the command line followed by a right-click. Line and Polyline tools — an outline drawn using the Line tool consists of a number of objects equal to the number of lines in the outline.
An outline drawn using the Polyline is a single object no matter how many plines are in the outline. Construct the outline in Fig. The coordinate points of each corner of the rectangle will need to be calculated from the lengths of the lines between the corners. Using the Line tool, construct the outline in Fig.
Exercises 1. Using the Line tool construct the rectangle in Fig. Introducing drawing 35 4. Using the Circle tool, construct the two circles of radius 50 and Then, using the Ttr prompt, add the circle of radius 25 Fig. In an acadiso. Then, using the Ttr prompt, add the circle of radius Using the Line tool construct the two lines at the length and angle as given in Fig. Then with the Ttr prompt of the Circle tool, add the circle as shown.
R50 R25 R30 , , Fig. With the Polyline tool construct the arrows shown in Fig. Using the Polyline tool, construct the outline given in Fig. To describe the uses of the Polyline Edit pedit tool. To introduce the AutoSnap system and its uses. To introduce the Object Snap osnap system and it uses. Introduction The majority of tools in AutoCAD can be called into use in any one of the following four ways: By entering an abbreviation for the tool name at the command line in the Command palette.
For example the abbreviation for the Line tool is 1, for the Polyline tool it is pl and for the Circle tool it is c. By entering the full name of the tool at the command line. In practice operators constructing drawings in AutoCAD may well use a combination of these four methods. In the examples which follow, entering initials for these characteristics in response to prompts at the command line when the Arc tool is called allows arcs to be constructed in a variety of ways.
To call the Arc tool click on its tool icon in the Draw toolbar Fig. A sub-menu shows the pos- sible methods of constructing arcs Fig. The abbreviation for calling the Arc tool is a. Second example — Arc tool Fig.
Third example — Arc tool Fig. The Ellipse tool Ellipses can be regarded as what is seen when a circle is viewed from directly in front of the circle and the circle rotated through an angle about its horizontal diameter.
Ellipses are measured in terms of two axes — a major axis and a minor axis; the major axis being the diameter of the circle and the minor axis being the height of the ellipse after the circle has been rotated through an angle Fig. The abbrevia- tion for calling the Ellipse tool is el. First example — Ellipse Fig. Third example — Ellipse Fig. Saving drawings Before going further it is as well to know how to save the drawings constructed when answering examples and exercises in this book.
When a drawing has been constructed, left-click on File in the menu bar and on Save As. The Save Drawing As dialog appears Fig. In the File name: The file name extension. Left-click the Save button of the dialog. The drawing will be saved to the floppy with the file name extension.
Osnap, AutoSnap and Dynamic Input In previous chapters several methods of constructing accurate drawings have been described — using Snap; absolute coordinate entry; relative coordinate entry and tracking.
Osnap, AutoSnap and Draw tools 41 Fig. To save a drawing to a floppy in drive A: Place a floppy disk in drive A:. In the Save in: Object Snaps Osnaps Osnaps allow objects to be added to a drawing at precise positions in rela- tion to other objects already on screen. With osnaps, objects can be added to the end points, mid points, to intersections of objects, to centres and quadrants of circles, etc.
Osnaps also override snap points even when snap is set on. To set Osnaps, at the command line: Click the Object Snap tab in the upper part of the dialog and click in each of the check boxes the small squares opposite the osnap names. See Fig. When osnaps are set ON, as outlines are constructed using osnaps, osnap icons and their tooltips appear as indicated in Fig. The following examples show the use of some of these abbreviations.
First example — Osnap abbreviations Fig. The result is shown in Fig. In this illustration the osnap tooltips are shown as they appear when each object is added to the outline.
Osnap, AutoSnap and Draw tools 43 Fig. Second example — Osnap abbreviations Fig. With AutoSnap set, each time an object is added to a drawing the AutoSnap features appear as indicated in Fig.
Part of a drawing showing the features of a number of AutoSnap points is given in Fig. Osnap, AutoSnap and Draw tools 45 Fig. To set AutoSnap, right-click in the com- mand window and from the menu which appears click Options. The Options dialog appears. Click the Drafting tab in the upper part of the dialog and set the check boxes against the AutoSnap Settings on tick in boxes.
These settings are shown on Figs 3. To see the drop-down menu giving the prompts available with DYN press the down key of the keyboard and click the prompt to be used. Notes on the use of DYN 1. A click on the Clean Screen icon in the bottom right-hand corner of the AutoCAD window produces an uncluttered workspace area with only the menu bar Fig.
The command palette can also Some operators may well prefer working in such a larger than normal workspace. All the tool names or abbreviations can be entered at the keyboard.
Thus working with DYN set on can be of benefit to those who prefer doing so. An example of using DYN Fig. Turn DYN on with a click on its button in the status bar.
Enter commandlinehide to hide the command palette. Enter pl for Polyline at the keyboard followed by pressing Return. Enter , Return. Enter ,0 Return. Enter 0, Return. Enter 80,0 Return. Enter c Return. Enter pe for Polyline Edit Return. Press the down arrow key of the keyboard. In the menu which appears click Width Return.
Click on the pline just drawn and enter 2 Return. Examples of using some Draw tools First example — Polygon tool Fig. Call the Polygon tool — either with a click on its tool icon in the 2D Draw control panel Fig. Or it can be called from the Draw drop-down menu Fig. In the same manner construct a 5-sided polygon of centre , and radius Osnap, AutoSnap and Draw tools 49 Fig. Then, construct an 8-sided polygon of centre , and radius Repeat to construct a 9-sided polygon circumscribed about a circle of radius 60 and centre 60, Construct yet another polygon with 10 sides of radius 60 and centre , Finally another polygon circumscribing a circle of radius 60, of centre ,80 and sides Second example — Rectangle tool Fig.
Or it can be called from the Draw drop-down menu. Third example — Rectangle tool Fig. Fourth example — Rectangle Fig. First example — Polyline Edit Figs 3. With the Polyline tool construct the outlines 1 to 6 of Fig. Call the Edit Polyline tool — either from the Modify drop-down menu Fig. The com- mand line shows: Repeat with pline 4 and enter s Spline in response to the prompt line: Repeat with pline 5 and enter j Join in response to the prompt line: The result is shown in pline 6.
The resulting examples are shown in Fig. Osnap, AutoSnap and Draw tools 53 Fig. Example — Multiple Polyline Edit Fig. With the Polyline tool construct the left-hand outlines of Fig. Call the Edit Polyline tool. Select objects: The result is shown in the right-hand drawing of Fig.
This is particularly useful when the operator wishes to zoom when constructing a drawing see page As an example when the Line tool is being used: Specify next point: And so on.
The transparent command method can be used with any tool. Some of the numerous set variables available in AutoCAD will be described in later pages. It is set as follows: And now when ellipses are drawn they are plines. If the variable is set to 0, the ellipses will be splines. The value of changing ellipses to plines is that they can then be edited using the Edit Polyline tool. Revision notes The following terms have been used in this chapter: Field — a part of a window or dialog in which numbers or letters are entered or can be read.
Popup list — a list brought in screen with a click on the arrow often found at the right-hand end of a field. Object — a part of a drawing which can be treated as a single object. For example a line constructed with the Line tool is an object; a rectangle constructed with the Polyline tool is an object; an arc constructed with the Arc tool is an object.
It will be seen in Chapter 10 that several objects can be formed into a single object. Toolbar — a collection of tool icons all of which have similar functions.