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Creating Symbols For Multiple Use

Creating Symbols For Multiple Use. Engineering Design Technology Sacramento City College. Objectives. Create and save blocks Insert blocks in drawings Edit a block and update it in a drawing. Insert drawings and blocks into drawings. Create blocks that are saved independent of the drawing.

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Creating Symbols For Multiple Use

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  1. Creating Symbols For Multiple Use Engineering Design TechnologySacramento City College Creating Symbols/Blocks

  2. Objectives • Create and save blocks • Insert blocks in drawings • Edit a block and update it in a drawing. • Insert drawings and blocks into drawings. • Create blocks that are saved independent of the drawing. • Construct and use a symbol library of blocks. Creating Symbols/Blocks

  3. Symbols or “BLOCKS” Creating Symbols/Blocks

  4. Constructing Blocks • A block can be any • Shape. • Symbol. • View. • Drawing • Text • Group of lines. • that you use more than once. Creating Symbols/Blocks

  5. Constructing Blocks • Examples of blocks • Chair • Desk • Plumbing Fixture • Piping Symbol. • Etc. Creating Symbols/Blocks

  6. Constructing Blocks • When preparing drawings • LOOK for items that should be a block • Review the drawing. • Look for any shapes, components, notes, and assemblies that are used more than once. • These can be drawn once and then saved as blocks and re-used over and over again. • Saves time. • Saves $$$ for your company. Creating Symbols/Blocks

  7. Symbols • AutoCAD has two commands for blocks. • Block • WBlock Creating Symbols/Blocks

  8. Symbols • BLOCK – • Creates a block that is stored within the CURRENT drawing ONLY. • Re-use block over and over in THAT drawing. • LOCAL access only. Creating Symbols/Blocks

  9. Symbols • WBLOCK – • Creates a block that is saved as a separate drawing file on your diskette, flash or hard drive • Can be used in any drawing. • Put Blocks in Library on file server. • Can be used by the entire company. • GLOBAL access Creating Symbols/Blocks

  10. Creating Symbols as Blocks • Both typesof blocks can be scaled and rotated to meet the drawing requirements. Creating Symbols/Blocks

  11. Symbols • Both types of blocks can be used to create a symbol library. • A symbol library is a related group of symbols. • Pipe • Furniture • Mechanical symbols Creating Symbols/Blocks

  12. Creating a Block Creating Symbols/Blocks

  13. Creating a Block • Procedure to create a block. • 1. Select the drawing components that should be part of the block. • 2. Name the block. • 3. Indicate the block “handle” or Insertion Point. Creating Symbols/Blocks

  14. The Effect of Layers On Blocks Creating Symbols/Blocks

  15. Drawing the Block Components • Two Methods • 1. Draw blocks on Layer 0 • 2. Draw blocks with components on other layers. Creating Symbols/Blocks

  16. Drawing the Block Components • Method 1 – Created on Layer 0 • The block will have the samecolor, linetype and lineweight as the layer on which it is inserted. • The block will become “part of the family” where it is inserted. • Always create blocks on layer 0. • Usually the preferred method! Creating Symbols/Blocks

  17. Drawing the Block Components • Example 1: • If a block is • Created on Layer “0” and the • INSERT’ed on a layer with these attributes: • RED color • HIDDEN linetype • The block will appear RED and HIDDEN. Creating Symbols/Blocks

  18. Drawing the Block Components • Example 2: • If a block is • Created on Layer “0” and the • INSERT’ed on a layer with these attributes: • GREEN color • CENTER linetype • The block will appear GREEN and CENTER. Creating Symbols/Blocks

  19. Drawing the Block Components • Example 3 • The block components will always have specific color, linetype or lineweight regardless of which layer it is inserted on • OVERRIDE the • Color • Linetype • Of the block entities BEFORE creating the block. Creating Symbols/Blocks

  20. Layers and Blocks • Blocks when created • retain the properties of the layers on which they were created. • Retain the layers on which they were created. Creating Symbols/Blocks

  21. Layers and Blocks • ByLayer is the default creation mode. • When set to “ByLayer”, the block will take on the properties of the layer it is inserted. • Block color and linetype are determined by the layer on which they were created. Creating Symbols/Blocks

  22. Layers and Blocks • If a block named circle was created with • Red color. • Dashed linetype. • When inserted or used on the drawing, it remains red and dashed, no matter what layer it is inserted on. Creating Symbols/Blocks

  23. Layers and Blocks • A block defined in ByLayer mode retains its properties, including layer. • If the layers do not exist in the drawing where the block is being inserted, AutoCAD creates these layers. Creating Symbols/Blocks

  24. Layers and Blocks • A block must be created on layer 0 to assume the properties of the layer it is inserted on. Creating Symbols/Blocks

  25. Layers and Blocks • If a block is created on layer 0, and inserted on layer 1, it becomes part of Layer 1 and assumes Layer 1 properties. • If the block is exploded, the objects return back to layer 0 and to the original color and linetype of Layer 0. Creating Symbols/Blocks

  26. ByLayer vs ByBlock • If the current linetype is set to BYLAYER, • The block is created with the current linetype assigned to that layer. Creating Symbols/Blocks

  27. ByLayer vs ByBlock • If the current linetype is set to BYBLOCK, • The block will assume the current color and linetype when it is inserted into a drawing. Creating Symbols/Blocks

  28. ByLayer vs ByBlock • If the current linetype is set to BYBLOCK, • Objects are created using the CONTINOUS linetype until the objects are grouped into a block. • When the block is inserted into the drawing, those objects acquire the current linetype setting. Creating Symbols/Blocks

  29. ByLayer vs ByBlock • If the current color is set to BYLAYER, • Objects are created with the color assigned to the current layer. • If the current color is set to BYBLOCK • Objects are created using color 7 (white or black) until the objects are grouped into a block. • When the block is inserted into the drawing, it acquires the current color setting. Creating Symbols/Blocks

  30. Changing Block Properties Creating Symbols/Blocks

  31. Changing Block Properties • Use the Properties window to change the properties of a block. • To open the Properties window • Right-click, choose Properties • Or • Double-click entity. Creating Symbols/Blocks

  32. Creating Symbols/Blocks

  33. Forcing Color/Linetypes for Blocks Creating Symbols/Blocks

  34. Drawing the Block Components • Occasionally you will need to create a block with • Specific colors. • Specific linetypes. • A BLOCK can be created with specific colors and linetypes regardless of the layer it is to be used on. Creating Symbols/Blocks

  35. Drawing the Block Components • A user can override the • color • linetype settings • before drawing the objects • Use OBJECT PROPERTIES drop-down box. Creating Symbols/Blocks

  36. Drawing the Block Components • To allow the block to assume the current color and linetype when the block is inserted into a drawing, set the current object color and linetype to ByBlock. Creating Symbols/Blocks

  37. Drawing the Block Components • To set the color to ByBlock, • Pick ByBlock in the Color Control drop-down list of the Object Properties toolbar. • OR • Pick Color... from the Format pull-down menu to access the Select Color dialog box. • OR • Pick the ByBlock button in the Logical Colors area. Creating Symbols/Blocks

  38. Drawing the Block Components • To set the linetype to ByBlock, • Pick ByBlock in the Linetype Control drop-down list of the Object Properties toolbar. • OR • Pick Linetype... from the Format pull-down menu to display the Linetype Manager dialog box. • OR • Pick ByBIock in the Linetype list and then pick the Current button. Creating Symbols/Blocks

  39. Creating Symbols/Blocks

  40. Creating Symbols/Blocks

  41. Creating Symbols/Blocks

  42. Drawing the Block Components • A block created with ByBlock settings assumes the current color and linetype when it is inserted into a drawing, regardless of the current layer setting. Creating Symbols/Blocks

  43. Creating Blocks Creating Symbols/Blocks

  44. To Create A Block • To create a BLOCK: • Pick the Make Block button in the Draw toolbar • OR • Pick Make... from the Block cascading menu in the Draw pull-down menu • OR • Enter B, BLOCK, or BMAKE at the Command: prompt. • Any one of these methods displays the Block Definition dialog box. Creating Symbols/Blocks

  45. Creating Symbols/Blocks

  46. To Create A Block • 1. In the Name: text box, enter a name for the block, such as BORDER. • The name cannot exceed 255 characters. • It can include numbers, letters, and spaces, as well as the dollar sign ($), hyphen (-), and underscore (-). Creating Symbols/Blocks

  47. Creating Symbols/Blocks

  48. Creating Symbols/Blocks

  49. To Create A Block • 2. In the Objects area, pick the Select objects button • Use your pointing device to select objects for the block definition. • Select all the objects that will make up the block. Press [Enter] when you are done. Creating Symbols/Blocks

  50. Creating Symbols/Blocks

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