Creating, opening and saving AutoCAD drawings

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Enter command in the AutoCAD command line - the most versatile way to call AutoCAD commands

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Interface AutoCAD is the appearance of AutoCAD

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Student AutoCAD - free CAD in your language for learning

Each student before starting the study program asks the question: "Where to download the free version of the program AutoCAD?". Download the demo version of the program is not rational, because license for it is not more than 30 days.

СDownload AutoCAD pirated version of dangerous:

• the program may be infected with viruses;
• give errors;
• fly license after upgrade, etc.

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ORTHO mode orthogonal constructions in AutoCAD

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Tracking mode support polar angles in AutoCAD

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Stepping and object snaps in AutoCAD

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Revision cloud AutoCAD

AutoCAD drawing command

Revision cloud

Definition

Revision cloud in AutoCAD is closed polyline consisting of arc segments.

Tool

Tool Revision cloud allows you to build auxiliary correctional clouds in drawing and is used to highlight viewed fragments..

Command

Cloud

Object

Polyline

Basically, corrective clouds are used to draw attention to individual fragments of drawing at stage of its verification and review.

Command Cloud

The Cloud command is responsible for its creation, which can be called in one of following ways (start creating cloud):

• You can build revision cloud from menu bar, item Drawing - Cloud row;
• You can draw it from Home tab of tool ribbon — in Drawing Tools group — nested buttons for how to build cloud in AutoCAD: rectangular, polygonal, freehand;
• You can also create revision cloud from classic Drawing toolbar - Mark cloud button (by default);
• You can start building it directly from command line by writing command name on Cloud command line.

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AutoCAD Elliptical Arc

AutoCAD drawing command

Elliptical Arc

Definition

Elliptical arc in AutoCAD is part of ellipse.

Tool

AutoCAD tool Elliptical Arc an option of Ellipse command that allows you to build elliptical arcs. first two points of an elliptical arc determine location and length of first axis. third point defines distance between center of elliptical arc and end point of second axis. fourth and fifth points define starting and ending angles.

Command

Command Option Ellipse

Object

Ellipse

The Elliptical Arc tool in AutoCAD is very rarely used and exists in conjunction with Ellipse command, since it is an additional functionality of command.

Elliptical Arc Tool

For creating an elliptical arc in AutoCAD, Arc option of Ellipse command is responsible. Call this option in following ways (start building an elliptical arc):

• You can build an object in AutoCAD Elliptical Arc from menu bar, and then click Drawing - Ellipse Line - Arc line in drop-down list;
• You can draw an elliptical arc from Home tab of tool ribbon — in Drawing group of tools — Elliptical Arc button in AutoCAD;
• You can create it from classic Drawing toolbar - AutoCAD Elliptical Arc button;
• as well as directly create an elliptical arc, writing command name on Ellipse command line, then select Arc option.

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Ellipse AutoCAD

AutoCAD drawing command

Ellipse

Definition

An ellipse in AutoCAD is geometric figure, which by default is defined by two axes (the major and minor axis of ellipse). Note: program determines which axis is large and which is small, based on their relative length. If you set an equal length of axes of ellipse, you get circle, which is an ellipse object in AutoCAD.

Tool

Ellipse tool is command that allows you to build ellipses and elliptical arcs. first two points of ellipse determine location and length of first axis. third point defines distance between center of ellipse and end point of second axis.

Command

Ellipse

Object

Ellipse

In two-dimensional design, Ellipse object in AutoCAD is used quite rarely, but quite often in isometric design. Ellipse team allows you to build circles in axonometry, since it has Izokrug tool in its functionality.

Command Ellipse

For creation of an ellipse in AutoCAD, command Ellipse/Ellipse is responsible, which can be called up in following ways (start its construction):

• You can build ellipses in AutoCAD from menu bar; select item Drawing - Ellipse line;
• You can create it from Home tab of ribbon of tools - in group of tools Drawing button "Center, (Axis, end)", i.e. you immediately available in ribbon options for Ellipse command in AutoCAD;
• You can draw an Ellipse object from classic Drawing toolbar; Ellipse button;
• as well as direct creation of an ellipse in program from command line, writing command name in command line Ellipse.

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Arc in AutoCAD

AutoCAD drawing command

Arc

Definition

Arc in AutoCAD is primitive object that is part of circle. Semicircle is an arc that represents half circle.

Tool

Arc tool is command that allows you to build flat Arc objects in combinations of parameters such as center, start and end point, radius, center angle, chord length and direction.

Command

Arc

Object

Arc

Command Arc

For creation of arc in program, Arc command is responsible, which can be called in one of following ways (start building arc):

• it is possible to build an arc in AutoCAD from menu bar; item Drawing - Arc line;
• You can draw it from Home tab of tool ribbon — in Drawing tool group — button in AutoCAD Arc;
• You can create it from Drawing toolbar - Arc button;
• directly call command Doug from command line, writing command name in command line Arc.

The program does not have ability to break circle at point, so many people represent circle in video of two arcs - semicircles. Such technique is used mainly in three-dimensional modeling or in complex curved lines (their conjugations).

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Rectangle AutoCAD

AutoCAD drawing command

Rectangle

Definition

A rectangle is geometric flat figure - parallelogram, whose opposite sides are equal and all angles are right. long side of rectangle is called length of rectangle, and short side is called width. rectangle in AutoCAD is two-dimensional closed polyline consisting of four line segments.

Tool

Rectangle tool builds rectangular 2D polyline using specified rectangle parameters (length, width, rotation angle) and type of corners (mate, chamfer or straight).

Command

Rectang/Rectangle

Object

Polyline

You can draw rectangles in AutoCAD using Segment command or Polyline command. However, y are quite often found on drawings, so developers came up with special command Rectangle. In older versions of program, command name is abbreviated: "Straight". In new versions of system, after having worked well with localization (y translated reference book), team began to wear full name - "Rectangle".

Rectangle command

By default, creation of rectangles in AutoCAD is based on specifying location of its two diagonally opposite vertices. constructed rectangle is located parallel to axes of current UCS.

You can call Rectangle tool in following ways (start its construction):

• you can create rectangles in AutoCAD from menu bar, item Drawing - string Rectangle;
• You can draw it from tool ribbon; Home tab of tool ribbon — in Drawing group, Rectangle button;
• You can draw rectangle in AutoCAD from classic Drawing toolbar - Rectangle button;
• You can draw rectangles by typing command name in command line Rectangle.

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Rays in AutoCAD

AutoCAD drawing command

Ray

Definition

Ray - straight line (linear object), having beginning (limited on one side), but not having an end.

Tool

Ray tool is cyclic command that allows you to build auxiliary lines (rays) starting at common point and endless in one direction.

Command

Ray

Object

Ray

Principle of creating ray is very similar to construction of object "Direct". Object AutoCAD "Ray" is also an auxiliary line and is mainly used to construct or objects, and ir markup.

Building rays

Ray team is responsible for its creation, which can be called in following ways:

• You can build rays from menu bar; Drawing item is Ray AutoCAD string;
• You can create it from tool ribbon on Home tab — in Drawing group of tools — Ray button;
• You can draw rays in AutoCAD from classic Drawing toolbar - Ray button (not available by default);
• You can draw it by directly typing command name on Ray command line.

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Auxiliary straight line in AutoCAD

AutoCAD drawing command

Straight line

Definition

Straight line is endless line in both directions.

Tool

Tool Straight line is cyclic command that allows you to build auxiliary lines (straight lines) starting at common point and endless in both directions.

Command

Xline

Object

Straight lin

Line drawing commands

Ray, Xline, Line, Polyline

Old and new versions of program use Direct tool, which allows you to create auxiliary straight lines. In old versions of system, auxiliary lines were used extensively, so almost every drawing began with marking up Liszt (Model) space of future part, and then it was only encircled by segments, arcs and other objects. drawing was edited. In modern versions of system, any drawing can be drawn without using auxiliary straight lines in AutoCAD, because we have such powerful bindings and tracking tools at our disposal.

Building auxiliary straight straight lines

For creation of auxiliary straight line in AutoCAD, Direct command is responsible, which can be called in following ways:

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Object Multiline in AutoCAD

AutoCAD drawing command

Multiline

Definition

Multiline in AutoCAD is set of parallel lines that are created simultaneously using one command.

Tool

The Multiline tool is cyclic command that allows building parallel segments perceived by program as single object (a multi line has its own properties and editing tools).

Command

MLine

Object

Multiline

In video tutorial we will learn to build in AutoCAD multiline. Responsible for creation of multiline - team Mline.

In this video tutorial we will consider options of AutoCAD Multiline command:

• Multiline arrangement.
• Its scale.
• Multiline style in program.

We will also dwell on creation of multiline style in AutoCAD, which is created using "MSTTIL" command. Let us examine multiline style dialog box and all necessary parameters when creating new multiline style in program.

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Object Spline in AutoCAD

AutoCAD drawing command

Spline

Definition

Spline in AutoCAD is smooth Bezier curve, which by default passes through specified points or deviates from them within tolerance. AutoCAD spline (complex) is piecewise smooth polynomial NURBS curve (NURBS - Non-Uniform Rational Bezier Spline) - non-uniform rational Bezier spline - Bezier curve, as special case of B-spline, passing near set of control points.

Tool

AutoCAD Spline tool is command that allows you to build smooth curves passing through specified points or near set of defining points, as well as defined vertices in shape and position tolerance.

Command

Spline

Object

Spline

AutoCAD Spline Properties

Существует несколько типов сплайнов, но все они обладают аналогичными свойствами.

1. The spline in AutoCAD is divided into segments (like polyline), which are called "nodes." If nodes (segments) are unevenly distributed along spline, then spline in AutoCAD is called non-uniform B-spline.
2. To define shape of an AutoCAD spline, “defining points” and “control vertices” are used. defining points are by default on line of spline, and control vertices are outside it.
3. Order of spline AutoCAD determines how many times its curvature can vary within one segment. curve of first order is straight line. curve of second order has constant curvature (arc). By default, spline in AutoCAD is combination of segments of 3-degree polynomial curves (also called "cubic curves" - they can have one curvature change per segment. Fourth-order curves - two changes, etc., you can bring its value to 10.

Command Spline

The Spline command is responsible for building spline in program. Call which you can (start building spline):

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What is polyline in AutoCAD, what is it for?

AutoCAD drawing command

Polyline

Definition

Polyline is universal line that consists of segments of both straight and arc segments that are perceived as single object.

Tool

Polyline tool is command that allows you to build 2D polylines representing connected sequence of linear and arc segments (perceived as one object)

Command

Polyline

Object

Polyline

Objects considered earlier: rectangle, polygon, mark cloud (correctional), ring - all of them consist of polylines. If you select any of these objects and open properties panel in window, “Polyline” will be written in window header, so these objects can be created directly in program using AutoCAD Polyline tool.

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Why do we need points in AutoCAD

AutoCAD drawing command

Point

Definition

A point in AutoCAD is point object, which can have form of both regular point and special character. Often they are also called AutoCAD nodal or anchor points, since binding to them is carried out using Object snapping node, and anchor points, as they are used to clarify/designate coordinates of objects.

Tool

Инструмент Автокад Точка - циклическая команда, позволяющая строить объекты-точки.

Command

Point

Object

Point

System variables

PDMODE и PDSIZE - set appearance of points and their sizes.

Points in AutoCAD are used quite often and mainly as reference nodes. They are printed as any object and by default system creates special layer for them. Let's not get ahead of ourselves and consider creation, adjustment of points in program.

Command Point

The Point command is responsible for its creation, which can be called in one of following ways (start creating point):

• you can create point in AutoCAD from menu bar item Drawing - line Point - in drop-down list select point construction mode Single or Multiple;
• you can draw it from Home tab of ribbon of tools - in Drawing group - Several Dots button in AutoCAD;
• you can build point in AutoCAD from classic Drawing toolbar - Point button with active mode of construction Several;
• You can also start creating point by typing command name in command line Point / Point.

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Donut AutoCAD

AutoCAD drawing command

Donut

Definition

Donut in AutoCAD is an object representing two concentric circles, internally space between which is filled with current color or, in other words, polyline in AutoCAD of given width.

Tool

Tool AutoCAD Donut cyclic team that build circle with fill or wide Donut.

Command

Donut

Object

Polyline

Command Donut

For construction of Donut in AutoCAD, command "Donut" is responsible, which can be called in one of following ways (start creating ring):

• it is possible to build Donut from menu bar item "Drawing" - line "Donut";
• You can create Donut object in programme from Home tab of tool ribbon — in Drawing group, Donut button;
• You can draw it from Drawing toolbar - Donut button (not available by default);
• and also directly create Donut in AutoCAD from command line by writing name of command in command line "Donut".

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