{"id":2584,"date":"2021-03-13T11:27:46","date_gmt":"2021-03-13T16:27:46","guid":{"rendered":"https:\/\/pressbooks.bccampus.ca\/autocad\/?post_type=chapter&p=2584"},"modified":"2021-07-15T14:56:31","modified_gmt":"2021-07-15T18:56:31","slug":"reference-files","status":"publish","type":"chapter","link":"https:\/\/pressbooks.bccampus.ca\/autocad\/chapter\/reference-files\/","title":{"raw":"Module 35: Reference Files","rendered":"Module 35: Reference Files"},"content":{"raw":"
\r\n

Learning Outcomes<\/p>\r\n\r\n<\/header>\r\n

\r\n\r\nWhen you have completed this module, you will be able to:\r\n
    \r\n \t
  1. Describe reference files and explain how they are used in an AutoCAD drawing.<\/li>\r\n \t
  2. Apply the XREF command.<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n

    Reference Files<\/h1>\r\nAn external reference file <\/em><\/span>is a drawing file linked to the current drawing. It acts as one object similar to a block and appears to be part of the current drawing. Usually called a reference file<\/span> <\/em>or a xref<\/em><\/span>, it is quite different from a block. A reference file updates itself whenever the drawing it is linked to is opened. It can also be updated manually by the CAD operator. If the drawing that is attached as an xref is changed, the changes will appear when the drawing it is attached to is opened or reloaded. Since it is only linked to the drawing, it does not add a significant amount of data to the drawing's database.\r\n\r\nThe XREF command is used to manage the reference files that are linked to the current drawing. You can attach more than one reference file at the same time. All objects in the reference file must be in Model space. Reference files can be scaled or rotated when they are attached with the XREF command or after they are attached with the SCALE and\/or ROTATE commands. You can snap to the object snap modes of objects in the reference files. A reference file can be edited in the current drawing with the changes going back to the original drawing file. This is done with the REFEDIT command.\r\n

    Xref Dependant Named Objects<\/h2>\r\nXref dependent named objects <\/em><\/span>are the layers, linetypes, dimension styles, blocks, and text styles of the reference file. They are added to the drawing they are attached to as non-graphical object information. The names are changed so that no two names are the same. Table 35-1 shows how the non-graphical names are dealt with by AutoCAD.\r\n\r\nThis table demonstrates how AutoCAD names the xref dependent named objects for layers, linetypes, dimension styles, blocks, and text styles. In this table, the name of the attached xref file drawing is House Plan and a layer in that drawing is First Floor and a block named Coffee Table. For a reference file, the name of the non-graphical object is changed to the name ' drawing name|object '. If it is bound to the drawing, it is renamed ' name$n$objectname '. The ' n ' starts with zero and increases by one if the same name is encountered.\r\n

    Binding a Reference File<\/h2>\r\nA reference file can be bound to the current drawing it is attached to with the XREF command. When a reference drawing is bound to the drawing, the XREF command converts it into a block. The xref dependent named objects are renamed according to Table 35-1. A block can be exploded to convert the objects into single objects and they become part of the drawing. When a reference file is bound, it can either be bound or inserted. Inserting a reference file converts it into a block but it strips the named non-graphical objects back to their original names. See Table 35-1\r\n\r\n[caption id=\"attachment_3410\" align=\"aligncenter\" width=\"919\"]\"\" Table 35-1
    Naming of Xref Dependent Named Objects[\/caption]\r\n\r\n \r\n
    \r\n

    AutoCAD Command: XREF<\/p>\r\n\r\n<\/header>\r\n

    \r\n\r\nThe XREF command is used to manage reference files in the current drawing.\r\n\r\nShortcut: XREF <\/strong>or XR<\/strong>\r\n\r\n[caption id=\"attachment_2589\" align=\"aligncenter\" width=\"252\"]\"\" Insert Pull-down[\/caption]\r\n\r\n[caption id=\"attachment_2590\" align=\"aligncenter\" width=\"300\"]\"\" Reference Toolbar[\/caption]\r\n\r\n<\/div>\r\n<\/div>\r\n

    WORKALONG: Using Reference Files<\/h1>\r\n

    Step 1<\/h2>\r\nOpen drawing: AutoCAD 2D Lab 32-3<\/span>.\r\n

    Step 2<\/h2>\r\nOpen the Units dialogue box and set the Insertion scale to millimeters.\r\n

    Step 3<\/h2>\r\nUsing the SAVEAS command, save and name the drawing four times to create four identical drawings with the following names:\r\n\r\nAutoCAD 2D Workalong 35-1A<\/span>\r\n\r\nAutoCAD 2D Workalong 35-1B<\/span>\r\n\r\nAutoCAD 2D Workalong 35-1C<\/span>\r\n\r\nAutoCAD 2D Workalong 35-1D<\/span>\r\n

    Step 4<\/h2>\r\nClose drawing: AutoCAD 2D Lab 32-3<\/span>.\r\n

    Step 5<\/h2>\r\nOpen drawing: AutoCAD 2D Workalong 35-1A<\/span>. (Figure Step 5)\r\n\r\n[caption id=\"attachment_2592\" align=\"aligncenter\" width=\"223\"]\"\" Figure Step 5[\/caption]\r\n

    Step 6<\/h2>\r\nEnsure that all layers are on and thawed.\r\n

    Step 7<\/h2>\r\nTurn layer: Lot Lines off. Enter the ZOOM Extents command. Erase all visible objects on the drawing. The drawing should appear blank.\r\n

    Step 8<\/h2>\r\nTurn layer: Lot Lines<\/span> on. Your drawing should match the figure. (Figure Step 8)\r\n\r\n[caption id=\"attachment_2593\" align=\"aligncenter\" width=\"183\"]\"\" Figure Step 8[\/caption]\r\n

    Step 9<\/h2>\r\nPurge all layers and blocks that can be purged from the drawing.\r\n

    Step 10<\/h2>\r\nSave and close the drawing.\r\n

    Step 11<\/h2>\r\nOpen drawing: AutoCAD 2D Workalong 35-1B<\/span>.\r\n

    Step 12<\/h2>\r\nEnsure that all layers are on and thawed.\r\n

    Step 13<\/h2>\r\nTurn layer: Object<\/span> off. Enter the ZOOM Extents command. Erase all visible objects on the drawing. The drawing should appear blank.\r\n

    Step 14<\/h2>\r\nTurn layer: Object<\/span> on. The drawing should match the figure. (Figure Step 14)\r\n\r\n[caption id=\"attachment_2594\" align=\"aligncenter\" width=\"183\"]\"\" Figure Step 14[\/caption]\r\n

    Step 15<\/h2>\r\nPurge all layers and blocks that can be purged from the drawing.\r\n

    Step 16<\/h2>\r\nSave and close the drawing.\r\n

    Step 17<\/h2>\r\nOpen drawing: AutoCAD 2D Workalong 35-1C<\/span>.\r\n

    Step 18<\/h2>\r\nEnsure that all layers are on and thawed.\r\n

    Step 19<\/h2>\r\nTurn layer: Boundary<\/span> off. Enter the ZOOM Extents command. Erase all visible objects on the drawing. The drawing should appear blank.\r\n

    Step 20<\/h2>\r\nTurn layer: Boundary<\/span> on. The drawing should match the figure. (Figure Step 20)\r\n\r\n[caption id=\"attachment_2595\" align=\"aligncenter\" width=\"181\"]\"\" Figure Step 20[\/caption]\r\n

    Step 21<\/h2>\r\nPurge all layers and blocks that can be purged from the drawing.\r\n

    Step 22<\/h2>\r\nSave and close the drawing.\r\n

    Step 23<\/h2>\r\nOpen drawing: AutoCAD 2D Workalong 35-1D<\/span>.\r\n

    Step 24<\/h2>\r\nEnsure that all layers are on and thawed.\r\n

    Step 25<\/h2>\r\nTurn layer: Lot Hatch<\/span> off. Enter the ZOOM Extents command. Erase all visible objects in the drawing. The drawing should appear blank.\r\n

    Step 26<\/h2>\r\nTurn layer: Lot Hatch<\/span> on. The drawing should match the figure. (Figure Step 26)\r\n\r\n[caption id=\"attachment_2596\" align=\"aligncenter\" width=\"179\"]\"\" Figure Step 26[\/caption]\r\n

    Step 27<\/h2>\r\nSave and close the drawing.\r\n

    Step 28<\/h2>\r\nStart a new drawing using the template: 2D Layout Metric<\/span>.\r\n

    Step 29<\/h2>\r\nSave and name the drawing: AutoCAD 2D Workalong 35-1<\/span>.\r\n

    Step 30<\/h2>\r\nOpen the Units dialogue box and set the Insertion scale to millimeters.\r\n

    Step 31<\/h2>\r\nEnter the XREF command to open the External References window. (Figure Step 31)\r\n\r\n[caption id=\"attachment_2597\" align=\"aligncenter\" width=\"478\"]\"\" Figure Step 31[\/caption]\r\n

    Step 32<\/h2>\r\nClick the Attach DWG icon. (Figure Step 32)\r\n\r\n[caption id=\"attachment_2598\" align=\"aligncenter\" width=\"243\"]\"\" Figure Step 32[\/caption]\r\n

    Step 33<\/h2>\r\nIn the Select Reference File dialogue box, select the drawing: AutoCAD 2D Workalong 35-1A.dwg<\/span>. (Figure Step 33)\r\n\r\n[caption id=\"attachment_2599\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 33[\/caption]\r\n

    Step 34<\/h2>\r\nIn the Attach External Reference dialogue box, set your dialogue box to match the figure. (Figure Step 34)\r\n\r\n[caption id=\"attachment_2600\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 34[\/caption]\r\n

    Step 35<\/h2>\r\nIn the External References window, you should see the drawing you just attached and the drawing you currently have open. (Figure Step 35)\r\n\r\n[caption id=\"attachment_2601\" align=\"aligncenter\" width=\"537\"]\"\" Figure Step 35[\/caption]\r\n

    Step 36<\/h2>\r\nEnter the ZOOM Extents command. (Figure Step 36)\r\n\r\n[caption id=\"attachment_2602\" align=\"aligncenter\" width=\"148\"]\"\" Figure Step 36[\/caption]\r\n

    Step 37<\/h2>\r\nUsing what you just learned, attach the drawing: AutoCAD 2D Workalong 35-1B<\/span> as a reference file. (Figure Step 37)\r\n\r\n[caption id=\"attachment_2603\" align=\"aligncenter\" width=\"194\"]\"\" Figure Step 37[\/caption]\r\n

    Step 38<\/h2>\r\nAttach the drawing: AutoCAD 2D Workalong 35-1C<\/span> as a reference file. (Figure Step 38)\r\n\r\n[caption id=\"attachment_2604\" align=\"aligncenter\" width=\"195\"]\"\" Figure Step 38[\/caption]\r\n

    Step 39<\/h2>\r\nAttach the drawing: AutoCAD 2D Workalong 35-1D<\/span> as a reference file. (Figure Step 39)\r\n\r\n[caption id=\"attachment_2605\" align=\"aligncenter\" width=\"195\"]\"\" Figure Step 39[\/caption]\r\n

    Step 40<\/h2>\r\nThe External Reference window should match the figure. (Figure Step 40)\r\n\r\n[caption id=\"attachment_2606\" align=\"aligncenter\" width=\"620\"]\"\" Figure Step 40[\/caption]\r\n

    Step 41<\/h2>\r\nIn the External Reference window, select the drawing: AutoCAD 2D Workalong 35-1C<\/span>. Right click the mouse. In the Right-click menu, click Detach. (Figure Step 41A and 41B)\r\n\r\n[caption id=\"attachment_2607\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 41A[\/caption]\r\n\r\n[caption id=\"attachment_2608\" align=\"aligncenter\" width=\"187\"]\"\" Figure Step 41B[\/caption]\r\n\r\n
    AUTHOR'S COMMENTS: <\/strong>When a drawing is detached, it is removed as a reference file.<\/div>\r\n

    Step 42<\/h2>\r\nOpen the Layer Properties Manager window. Take note of the layer names of the layers of the attached referenced files. (Figure Step 42)\r\n\r\n[caption id=\"attachment_2609\" align=\"aligncenter\" width=\"594\"]\"\" Figure Step 42[\/caption]\r\n

    Step 43<\/h2>\r\nIn the External Reference window, select the drawing: AutoCAD 2D Workalong 35-1A<\/span>. Right click the mouse. In the Right-click menu, click Bind. (Figure Step 43)\r\n\r\n[caption id=\"attachment_2610\" align=\"aligncenter\" width=\"297\"]\"\" Figure Step 43[\/caption]\r\n\r\n
    AUTHOR'S COMMENTS:\u00a0<\/strong>When a drawing is bound into the current drawing, it is inserted as a block.<\/div>\r\n

    Step 44<\/h2>\r\nIn the Bind Xrefs dialogue box, enable Bind and click OK. (Figure Step 44)\r\n\r\n[caption id=\"attachment_2611\" align=\"aligncenter\" width=\"314\"]\"\" Figure Step 44[\/caption]\r\n

    Step 45<\/h2>\r\nThe External Reference window should match the figure. (Figure Step 45)\r\n\r\n[caption id=\"attachment_2612\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 45[\/caption]\r\n

    Step 46<\/h2>\r\nYour drawing should as shown in the figure. (Figure step 46)\r\n\r\n[caption id=\"attachment_2613\" align=\"aligncenter\" width=\"223\"]\"\" Figure Step 46[\/caption]\r\n

    Step 47<\/h2>\r\nIn Layer Properties Manager window, turn off layer: AutoCAD 2D Workalong 35-1D|Lot Hatch<\/span>. (Figure Step 47)\r\n\r\n[caption id=\"attachment_2614\" align=\"aligncenter\" width=\"594\"]\"\" Figure Step 47[\/caption]\r\n

    Step 48<\/h2>\r\nYour completed drawing should match the figure. (Figure step 48)\r\n\r\n[caption id=\"attachment_2615\" align=\"aligncenter\" width=\"194\"]\"\" Figure Step 48[\/caption]\r\n

    Step 49<\/h2>\r\nSave and close the drawing.\r\n
    MUST KNOW: <\/strong>To completely remove a reference file from the current drawing, you must detach it using the XREF command. Erasing a reference file does not remove it completely from the drawing. All the named objects definitions associated with an erased xref remain. Using the Detach option removes the selected xref and all associated information.<\/div>\r\n

    Key Principles<\/h1>\r\n
    \r\n

    Key Principles in Module 35<\/p>\r\n\r\n<\/header>\r\n

    \r\n
      \r\n \t
    1. An external reference file is a drawing file linked to the current drawing. It acts as one object similar to a block and appears to be part of the current drawing.<\/li>\r\n \t
    2. A reference file can be bound to the drawing it is attached to with the XREF command. When a reference drawing is bound to the drawing, the XREF command converts it into a block.<\/li>\r\n \t
    3. To completely remove a reference file from the current drawing, it must be detached using the XREF command.<\/li>\r\n<\/ol>\r\n<\/div>\r\n<\/div>\r\n

      Lab Exercise 35-1<\/h1>\r\nTime allowed: 50 minutes.\r\n\r\n\r\n\r\n\r\n
      Drawing Name<\/th>\r\nTemplate<\/th>\r\nUnits<\/th>\r\n<\/tr>\r\n
      AutoCAD 2D Lab 35-1<\/td>\r\n2D Layout English<\/td>\r\nInches<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

      Step 1<\/h2>\r\nOn layer: Object<\/span>, draw the Polygon Multi-Tool shown in the figure. (Figure Step 1A, 1B, and 1C)\r\n\r\n[caption id=\"attachment_2617\" align=\"aligncenter\" width=\"279\"]\"\" Figure Step 1A
      Completed Drawing[\/caption]\r\n\r\n[caption id=\"attachment_2618\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 1B[\/caption]\r\n\r\n[caption id=\"attachment_2619\" align=\"aligncenter\" width=\"329\"]\"\" Figure Step 1C
      Polygon Multi-Tool[\/caption]\r\n

      Step 2<\/h2>\r\nSet the insertion units and check your drawing with the key. Turn layer: Key<\/span> off and freeze layer: Construction<\/span>.\r\n

      Lab Exercise 35-2<\/h1>\r\nTime allowed: 50 minutes.\r\n\r\n\r\n\r\n\r\n
      Drawing Name<\/th>\r\nTemplate<\/th>\r\nUnits<\/th>\r\n<\/tr>\r\n
      AutoCAD 2D Lab 35-2<\/td>\r\n2D Layout Metric<\/td>\r\nMillimeters<\/td>\r\n<\/tr>\r\n<\/tbody>\r\n<\/table>\r\n

      Step 1<\/h2>\r\nOn layer: Object<\/span>, draw the Double Hexagon Wrench shown in the figure. (Figure Step 1A, 1B, 1C, and 1D)\r\n\r\n[caption id=\"attachment_2620\" align=\"aligncenter\" width=\"600\"]\"\" Figure Step 1A[\/caption]\r\n\r\n[caption id=\"attachment_2621\" align=\"aligncenter\" width=\"470\"]\"\" Figure Step 1B
      Detail[\/caption]\r\n\r\n
      AUTHOR'S COMMENTS: <\/strong>The double hexagon shape is drawn with two hexagons at 60 degrees offset. The inner lines are then trimmed to complete the double hexagon.<\/div>\r\n\r\n[caption id=\"attachment_2622\" align=\"aligncenter\" width=\"331\"]\"\" Figure Step 1C
      Completed Drawing[\/caption]\r\n\r\n[caption id=\"attachment_2623\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 1D
      Double Hexagon Wrench[\/caption]\r\n

      Step 2<\/h2>\r\nSet the insertion units and check your drawing with the key. Turn layer: Key off and freeze layer: Construction<\/span>.","rendered":"
      \n
      \n

      Learning Outcomes<\/p>\n<\/header>\n

      \n

      When you have completed this module, you will be able to:<\/p>\n

        \n
      1. Describe reference files and explain how they are used in an AutoCAD drawing.<\/li>\n
      2. Apply the XREF command.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

        Reference Files<\/h1>\n

        An external reference file <\/em><\/span>is a drawing file linked to the current drawing. It acts as one object similar to a block and appears to be part of the current drawing. Usually called a reference file<\/span> <\/em>or a xref<\/em><\/span>, it is quite different from a block. A reference file updates itself whenever the drawing it is linked to is opened. It can also be updated manually by the CAD operator. If the drawing that is attached as an xref is changed, the changes will appear when the drawing it is attached to is opened or reloaded. Since it is only linked to the drawing, it does not add a significant amount of data to the drawing’s database.<\/p>\n

        The XREF command is used to manage the reference files that are linked to the current drawing. You can attach more than one reference file at the same time. All objects in the reference file must be in Model space. Reference files can be scaled or rotated when they are attached with the XREF command or after they are attached with the SCALE and\/or ROTATE commands. You can snap to the object snap modes of objects in the reference files. A reference file can be edited in the current drawing with the changes going back to the original drawing file. This is done with the REFEDIT command.<\/p>\n

        Xref Dependant Named Objects<\/h2>\n

        Xref dependent named objects <\/em><\/span>are the layers, linetypes, dimension styles, blocks, and text styles of the reference file. They are added to the drawing they are attached to as non-graphical object information. The names are changed so that no two names are the same. Table 35-1 shows how the non-graphical names are dealt with by AutoCAD.<\/p>\n

        This table demonstrates how AutoCAD names the xref dependent named objects for layers, linetypes, dimension styles, blocks, and text styles. In this table, the name of the attached xref file drawing is House Plan and a layer in that drawing is First Floor and a block named Coffee Table. For a reference file, the name of the non-graphical object is changed to the name ‘ drawing name|object ‘. If it is bound to the drawing, it is renamed ‘ name$n$objectname ‘. The ‘ n ‘ starts with zero and increases by one if the same name is encountered.<\/p>\n

        Binding a Reference File<\/h2>\n

        A reference file can be bound to the current drawing it is attached to with the XREF command. When a reference drawing is bound to the drawing, the XREF command converts it into a block. The xref dependent named objects are renamed according to Table 35-1. A block can be exploded to convert the objects into single objects and they become part of the drawing. When a reference file is bound, it can either be bound or inserted. Inserting a reference file converts it into a block but it strips the named non-graphical objects back to their original names. See Table 35-1<\/p>\n

        \"\"
        Table 35-1
        Naming of Xref Dependent Named Objects<\/figcaption><\/figure>\n

         <\/p>\n

        \n
        \n

        AutoCAD Command: XREF<\/p>\n<\/header>\n

        \n

        The XREF command is used to manage reference files in the current drawing.<\/p>\n

        Shortcut: XREF <\/strong>or XR<\/strong><\/p>\n

        \"\"
        Insert Pull-down<\/figcaption><\/figure>\n
        \"\"
        Reference Toolbar<\/figcaption><\/figure>\n<\/div>\n<\/div>\n

        WORKALONG: Using Reference Files<\/h1>\n

        Step 1<\/h2>\n

        Open drawing: AutoCAD 2D Lab 32-3<\/span>.<\/p>\n

        Step 2<\/h2>\n

        Open the Units dialogue box and set the Insertion scale to millimeters.<\/p>\n

        Step 3<\/h2>\n

        Using the SAVEAS command, save and name the drawing four times to create four identical drawings with the following names:<\/p>\n

        AutoCAD 2D Workalong 35-1A<\/span><\/p>\n

        AutoCAD 2D Workalong 35-1B<\/span><\/p>\n

        AutoCAD 2D Workalong 35-1C<\/span><\/p>\n

        AutoCAD 2D Workalong 35-1D<\/span><\/p>\n

        Step 4<\/h2>\n

        Close drawing: AutoCAD 2D Lab 32-3<\/span>.<\/p>\n

        Step 5<\/h2>\n

        Open drawing: AutoCAD 2D Workalong 35-1A<\/span>. (Figure Step 5)<\/p>\n

        \"\"
        Figure Step 5<\/figcaption><\/figure>\n

        Step 6<\/h2>\n

        Ensure that all layers are on and thawed.<\/p>\n

        Step 7<\/h2>\n

        Turn layer: Lot Lines off. Enter the ZOOM Extents command. Erase all visible objects on the drawing. The drawing should appear blank.<\/p>\n

        Step 8<\/h2>\n

        Turn layer: Lot Lines<\/span> on. Your drawing should match the figure. (Figure Step 8)<\/p>\n

        \"\"
        Figure Step 8<\/figcaption><\/figure>\n

        Step 9<\/h2>\n

        Purge all layers and blocks that can be purged from the drawing.<\/p>\n

        Step 10<\/h2>\n

        Save and close the drawing.<\/p>\n

        Step 11<\/h2>\n

        Open drawing: AutoCAD 2D Workalong 35-1B<\/span>.<\/p>\n

        Step 12<\/h2>\n

        Ensure that all layers are on and thawed.<\/p>\n

        Step 13<\/h2>\n

        Turn layer: Object<\/span> off. Enter the ZOOM Extents command. Erase all visible objects on the drawing. The drawing should appear blank.<\/p>\n

        Step 14<\/h2>\n

        Turn layer: Object<\/span> on. The drawing should match the figure. (Figure Step 14)<\/p>\n

        \"\"
        Figure Step 14<\/figcaption><\/figure>\n

        Step 15<\/h2>\n

        Purge all layers and blocks that can be purged from the drawing.<\/p>\n

        Step 16<\/h2>\n

        Save and close the drawing.<\/p>\n

        Step 17<\/h2>\n

        Open drawing: AutoCAD 2D Workalong 35-1C<\/span>.<\/p>\n

        Step 18<\/h2>\n

        Ensure that all layers are on and thawed.<\/p>\n

        Step 19<\/h2>\n

        Turn layer: Boundary<\/span> off. Enter the ZOOM Extents command. Erase all visible objects on the drawing. The drawing should appear blank.<\/p>\n

        Step 20<\/h2>\n

        Turn layer: Boundary<\/span> on. The drawing should match the figure. (Figure Step 20)<\/p>\n

        \"\"
        Figure Step 20<\/figcaption><\/figure>\n

        Step 21<\/h2>\n

        Purge all layers and blocks that can be purged from the drawing.<\/p>\n

        Step 22<\/h2>\n

        Save and close the drawing.<\/p>\n

        Step 23<\/h2>\n

        Open drawing: AutoCAD 2D Workalong 35-1D<\/span>.<\/p>\n

        Step 24<\/h2>\n

        Ensure that all layers are on and thawed.<\/p>\n

        Step 25<\/h2>\n

        Turn layer: Lot Hatch<\/span> off. Enter the ZOOM Extents command. Erase all visible objects in the drawing. The drawing should appear blank.<\/p>\n

        Step 26<\/h2>\n

        Turn layer: Lot Hatch<\/span> on. The drawing should match the figure. (Figure Step 26)<\/p>\n

        \"\"
        Figure Step 26<\/figcaption><\/figure>\n

        Step 27<\/h2>\n

        Save and close the drawing.<\/p>\n

        Step 28<\/h2>\n

        Start a new drawing using the template: 2D Layout Metric<\/span>.<\/p>\n

        Step 29<\/h2>\n

        Save and name the drawing: AutoCAD 2D Workalong 35-1<\/span>.<\/p>\n

        Step 30<\/h2>\n

        Open the Units dialogue box and set the Insertion scale to millimeters.<\/p>\n

        Step 31<\/h2>\n

        Enter the XREF command to open the External References window. (Figure Step 31)<\/p>\n

        \"\"
        Figure Step 31<\/figcaption><\/figure>\n

        Step 32<\/h2>\n

        Click the Attach DWG icon. (Figure Step 32)<\/p>\n

        \"\"
        Figure Step 32<\/figcaption><\/figure>\n

        Step 33<\/h2>\n

        In the Select Reference File dialogue box, select the drawing: AutoCAD 2D Workalong 35-1A.dwg<\/span>. (Figure Step 33)<\/p>\n

        \"\"
        Figure Step 33<\/figcaption><\/figure>\n

        Step 34<\/h2>\n

        In the Attach External Reference dialogue box, set your dialogue box to match the figure. (Figure Step 34)<\/p>\n

        \"\"
        Figure Step 34<\/figcaption><\/figure>\n

        Step 35<\/h2>\n

        In the External References window, you should see the drawing you just attached and the drawing you currently have open. (Figure Step 35)<\/p>\n

        \"\"
        Figure Step 35<\/figcaption><\/figure>\n

        Step 36<\/h2>\n

        Enter the ZOOM Extents command. (Figure Step 36)<\/p>\n

        \"\"
        Figure Step 36<\/figcaption><\/figure>\n

        Step 37<\/h2>\n

        Using what you just learned, attach the drawing: AutoCAD 2D Workalong 35-1B<\/span> as a reference file. (Figure Step 37)<\/p>\n

        \"\"
        Figure Step 37<\/figcaption><\/figure>\n

        Step 38<\/h2>\n

        Attach the drawing: AutoCAD 2D Workalong 35-1C<\/span> as a reference file. (Figure Step 38)<\/p>\n

        \"\"
        Figure Step 38<\/figcaption><\/figure>\n

        Step 39<\/h2>\n

        Attach the drawing: AutoCAD 2D Workalong 35-1D<\/span> as a reference file. (Figure Step 39)<\/p>\n

        \"\"
        Figure Step 39<\/figcaption><\/figure>\n

        Step 40<\/h2>\n

        The External Reference window should match the figure. (Figure Step 40)<\/p>\n

        \"\"
        Figure Step 40<\/figcaption><\/figure>\n

        Step 41<\/h2>\n

        In the External Reference window, select the drawing: AutoCAD 2D Workalong 35-1C<\/span>. Right click the mouse. In the Right-click menu, click Detach. (Figure Step 41A and 41B)<\/p>\n

        \"\"
        Figure Step 41A<\/figcaption><\/figure>\n
        \"\"
        Figure Step 41B<\/figcaption><\/figure>\n
        AUTHOR’S COMMENTS: <\/strong>When a drawing is detached, it is removed as a reference file.<\/div>\n

        Step 42<\/h2>\n

        Open the Layer Properties Manager window. Take note of the layer names of the layers of the attached referenced files. (Figure Step 42)<\/p>\n

        \"\"
        Figure Step 42<\/figcaption><\/figure>\n

        Step 43<\/h2>\n

        In the External Reference window, select the drawing: AutoCAD 2D Workalong 35-1A<\/span>. Right click the mouse. In the Right-click menu, click Bind. (Figure Step 43)<\/p>\n

        \"\"
        Figure Step 43<\/figcaption><\/figure>\n
        AUTHOR’S COMMENTS:\u00a0<\/strong>When a drawing is bound into the current drawing, it is inserted as a block.<\/div>\n

        Step 44<\/h2>\n

        In the Bind Xrefs dialogue box, enable Bind and click OK. (Figure Step 44)<\/p>\n

        \"\"
        Figure Step 44<\/figcaption><\/figure>\n

        Step 45<\/h2>\n

        The External Reference window should match the figure. (Figure Step 45)<\/p>\n

        \"\"
        Figure Step 45<\/figcaption><\/figure>\n

        Step 46<\/h2>\n

        Your drawing should as shown in the figure. (Figure step 46)<\/p>\n

        \"\"
        Figure Step 46<\/figcaption><\/figure>\n

        Step 47<\/h2>\n

        In Layer Properties Manager window, turn off layer: AutoCAD 2D Workalong 35-1D|Lot Hatch<\/span>. (Figure Step 47)<\/p>\n

        \"\"
        Figure Step 47<\/figcaption><\/figure>\n

        Step 48<\/h2>\n

        Your completed drawing should match the figure. (Figure step 48)<\/p>\n

        \"\"
        Figure Step 48<\/figcaption><\/figure>\n

        Step 49<\/h2>\n

        Save and close the drawing.<\/p>\n

        MUST KNOW: <\/strong>To completely remove a reference file from the current drawing, you must detach it using the XREF command. Erasing a reference file does not remove it completely from the drawing. All the named objects definitions associated with an erased xref remain. Using the Detach option removes the selected xref and all associated information.<\/div>\n

        Key Principles<\/h1>\n
        \n
        \n

        Key Principles in Module 35<\/p>\n<\/header>\n

        \n
          \n
        1. An external reference file is a drawing file linked to the current drawing. It acts as one object similar to a block and appears to be part of the current drawing.<\/li>\n
        2. A reference file can be bound to the drawing it is attached to with the XREF command. When a reference drawing is bound to the drawing, the XREF command converts it into a block.<\/li>\n
        3. To completely remove a reference file from the current drawing, it must be detached using the XREF command.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

          Lab Exercise 35-1<\/h1>\n

          Time allowed: 50 minutes.<\/p>\n\n\n\n\n
          Drawing Name<\/th>\nTemplate<\/th>\nUnits<\/th>\n<\/tr>\n
          AutoCAD 2D Lab 35-1<\/td>\n2D Layout English<\/td>\nInches<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Step 1<\/h2>\n

          On layer: Object<\/span>, draw the Polygon Multi-Tool shown in the figure. (Figure Step 1A, 1B, and 1C)<\/p>\n

          \"\"
          Figure Step 1A
          Completed Drawing<\/figcaption><\/figure>\n
          \"\"
          Figure Step 1B<\/figcaption><\/figure>\n
          \"\"
          Figure Step 1C
          Polygon Multi-Tool<\/figcaption><\/figure>\n

          Step 2<\/h2>\n

          Set the insertion units and check your drawing with the key. Turn layer: Key<\/span> off and freeze layer: Construction<\/span>.<\/p>\n

          Lab Exercise 35-2<\/h1>\n

          Time allowed: 50 minutes.<\/p>\n\n\n\n\n
          Drawing Name<\/th>\nTemplate<\/th>\nUnits<\/th>\n<\/tr>\n
          AutoCAD 2D Lab 35-2<\/td>\n2D Layout Metric<\/td>\nMillimeters<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Step 1<\/h2>\n

          On layer: Object<\/span>, draw the Double Hexagon Wrench shown in the figure. (Figure Step 1A, 1B, 1C, and 1D)<\/p>\n

          \"\"
          Figure Step 1A<\/figcaption><\/figure>\n
          \"\"
          Figure Step 1B
          Detail<\/figcaption><\/figure>\n
          AUTHOR’S COMMENTS: <\/strong>The double hexagon shape is drawn with two hexagons at 60 degrees offset. The inner lines are then trimmed to complete the double hexagon.<\/div>\n
          \"\"
          Figure Step 1C
          Completed Drawing<\/figcaption><\/figure>\n
          \"\"
          Figure Step 1D
          Double Hexagon Wrench<\/figcaption><\/figure>\n

          Step 2<\/h2>\n

          Set the insertion units and check your drawing with the key. Turn layer: Key off and freeze layer: Construction<\/span>.<\/p>\n","protected":false},"author":1154,"menu_order":4,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-2584","chapter","type-chapter","status-publish","hentry"],"part":2355,"_links":{"self":[{"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/chapters\/2584","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/wp\/v2\/users\/1154"}],"version-history":[{"count":16,"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/chapters\/2584\/revisions"}],"predecessor-version":[{"id":3411,"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/chapters\/2584\/revisions\/3411"}],"part":[{"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/parts\/2355"}],"metadata":[{"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/chapters\/2584\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/wp\/v2\/media?parent=2584"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/pressbooks\/v2\/chapter-type?post=2584"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/wp\/v2\/contributor?post=2584"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/pressbooks.bccampus.ca\/autocad\/wp-json\/wp\/v2\/license?post=2584"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}