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Lesson 1 – Getting Started In 3D

You are normally not concerned with the Z axis and Z ordinates are usually zero when you use AutoCAD for 2D drafting & design but you can specify Z ordinates other than zero (when AutoCAD prompts for points) to create objects in 3 dimensions. Right Hand Rule And The UCS You can define your own customized axes for X,Y & Z at any orientation using a variety of different tools and you can use familiar 2D commands in 3D if you Read More...

Lesson50 – Using AutoCAD DesignCenter Effectively

AutoCAD DesignCenter is a tool to find, access and re-use content that is not already stored in an open drawing. obvious content types include drawings & block definitions but content can have many other forms (including content created by custom applications). Selected content can be dragged into an open drawing without having to open the drawing file where this data is stored. for example, you could preview selected block definitions stored in any closed (or open) drawing file. then you Read More...

Lesson49 – Cut & Paste With Precision

AutoCAD is Multiple Document Interface (MDI) which makes it is easy to re-use objects in other drawings. One approach is to drag & drop object copies from one (open)drawing file into another (open) drawing file. you can Tile drawings in their own individual windows so you can see both drawings of interest at the same time. select source objects when no command is running. press & hold your right mouse button and drag the selected objects to the window of Read More...

Lesson48 – Object Linking & Embedding – OLE

Object Linking & Embedding (OLE) is the process in which data from a source file is linked to or embedded in a destination file. you use the Windows clipboard to copy this data from a source document & then paste it into the destination document. When you double-click on linked or embedded data you can edit that data using the Windows application that made the source file. if this data is embedded the original source file is no longer required Read More...

Lesson47 – Creating & Using DWF Files – ePlots

DWF files (ePlots) are special plot files that you can view and printwithout having to use AutoCAD. you can distribute plot information to non AutoCAD users you can also use ePlots to distribute drawing information without giving full access to the original AutoCAD drawing file. You create DWF (ePlot) files by selecting the DWF ePlot.pc3 plotter configuration when you Plot. you can specify the DWF File name at Plot time and you can even publish the file directly to an Read More...

Lesson46 – Creating & Using Hyperlinks

Hyperlinks let you connect to data in other files even if these files were created by other Windows applications. the linked file is opened automatically in an appropriate Windows application when you activate a hyperlink. The process for creating a hyperlink is specific to each Windows application but the general approach is usually the same. select objects that the hyperlink is to be activated by. use a command to specify the linked file name. For example, in MS Word 97 you Read More...

Lesson45 – Editing MLINEs

You can use Copy, Move, Mirror, Rotate, Scale & Stretch on MLINEs but some edit commands are not supported for MLINEs for example, you cannot use Break, Chamfer, Fillet, Trim &Extend on MLINE objects. to perform these types of operations on MLINEs you must use the Mledit (multiline edit) command. For example, to clean up a Tee intersection where two MLINEs meet you could use the Open Tee option for Mline select the Open Tee icon in the Multiline Edit Read More...

Lesson44 – Creating MLINEs

The Mline command creates MLINE objects that can have multiple elements and multiple segments in the same MLINE object. for example, the outer walls of a house plan shown below could be modeled using a single MLINE object. in this example, there are 2 elements (one for each side of the wall) and 8 segments (one for each wall section). When you invoke the Mline command AutoCAD reports the current settings on the command line & you are prompted for Read More...

Lesson43 – Creating LWPOLYLINEs & REGIONs

One way to create a LWPOLYLINE is to use the Pline command but this approach can be tedious for complex shapes. Pline (an abbreviation for PolyLINE) is used to create single objects that can be made up of multiple LINE & ARC segments. as an example, the shape below could be made from 9 individual LINEs & one ARC or it could be made from one LWPOLYLINE. Prior to AutoCAD Release 14 the Pline command created POLYLINE objects but now Read More...

Lesson42 – Editing Existing SPLINEs

You can select a SPLINE when no command is running to highlight the SPLINE & display the SPLINE grips. if you selected the topographical SPLINE from the previous exercise the grips would look like the illustration below. a grip would appear at each SPLINE point that you supplied when you used the Spline command. You can Stretch these SPLINE grips using grip editing techniques to change the shape of the selected SPLINE object. click on a grip to make it Read More...

Lesson41 – Creating New SPLINEs

The Spline command creates SPLINE objects based on NURBS NURBS stands for Non Uniform Rational B-Spline and this technology is useful for modeling free form curves in 2D & 3D. specify points that you would like the SPLINE to pass through (or near) and then specify tangent directions at each end. While SPLINEs are useful for sketching free form curves by eye they can also model curves governed by mathematical equations. for simple shapes you can model the entire curve Read More...

Lesson40 – Finding Drawings With Attributes In DesignCenter

You can use AutoCAD DesignCenter to Find drawings that contain either specific Attribute Tags or specific Attribute Values. Search for the word(s) cannot be blank on the Drawings tab but you can enter * (the wildcard for all file names). specify your attribute criteria on the Advanced tab. pick Find Now to find all drawings that match the current criteria. right-click on a drawing file found by the search to invoke a shortcut & select Open in Window to Read More...

Lesson39 – Using Attributes In Title Blocks

Title blocks normally require two types of text data. text that is always the same in every drawing (use TEXT) (e.g. labels such as “Modified On”) text that is specific to the current drawing (use ATTRIBUTEs) (e.g. text beside labels such as “November 18, 1999”) Create your title block as a drawing file and use ATTRIBUTE DEFINITIONs for the text that must change in each drawing. then Insert the title block drawing into the current drawing and assign Values to Read More...

Lesson38 – Extracting Attribute Data.

Attribute values can be extracted from drawings, which is another reason why you should consider using blocks with attributes. use the Attext command to extract attribute values to either a comma delimited file (CDF) or space delimited file (SDF). You must create a template file (in ASCII format) to control which attributes are extracted and how they are formatted in the output file. a record (line in the output file) is made for each selected object and each line in Read More...

Lesson37 – Controlling Attribute Visibility

Specify the normal visibility for attributes when you define them. if you do not want an attribute to be displayed in block inserts you should check Invisible as the Mode. You can override the visibility of all attributes in block inserts (but not the Invisibility mode of individual attributes) using Attdisp. if you select Normal the only attributes displayed in all block inserts are those defined with the Invisible mode unchecked. if you select On you see all attributes in Read More...

Lesson36 – Changing Attributes In Block Inserts

You can change values for the attributes of Single block inserts when you use the Attedit command in the dialogue box mode. you use the same dialogue box to edit existing values that you use when you Insert a new block insert. When you use Attedit in the command line mode you can change more than just the attribute values for existing block inserts. you can change the Value, Position, Height, Angle, Style, Layer and Color of attributes in existing Read More...

Lesson35 – Incorporating Attributes In Block Definitions

You create new block definitions using the Block command. begin by typing a Name for the new block definition that will be unique in the active drawing. pick Select objects and use selection tools to select the graphical objects & ATTRIBUTE DEFINITIONs. pick the Pick point button and use osnaps to select an appropriate base point relative to the selected objects. the block definition is stored in the current drawing file but you can use DesignCenter to insert it Read More...
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