{"id":387,"date":"2021-04-03T14:21:58","date_gmt":"2021-04-03T18:21:58","guid":{"rendered":"https:\/\/opentextbc.ca\/autocad3d\/chapter\/rotating-3d-models\/"},"modified":"2021-11-04T11:37:31","modified_gmt":"2021-11-04T15:37:31","slug":"rotating-3d-models","status":"publish","type":"chapter","link":"https:\/\/opentextbc.ca\/autocad3d\/chapter\/rotating-3d-models\/","title":{"raw":"Module 8: Rotating 3D Models","rendered":"Module 8: Rotating 3D Models"},"content":{"raw":"
\n

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

\n\nWhen you have completed this module, you will be able to:\n
    \n \t
  1. Apply the TRIM and EXTEND commands when trimming and extending in three dimensional wireframe modeling.<\/li>\n \t
  2. Apply the ROTATE3D command to rotate 3D models.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

    Rotating in 3D<\/h1>\nAutoCAD has individual 2D and 3D rotate commands. The 2D rotate command is ROTATE and in 3D, it is ROTATE3D. In this module, using the ROTATE3D command will be taught. It is used to rotate the model in 3D space. The main difference between the two commands is that the ROTATE command uses a XY point to rotate around and the ROTATE3D command uses two XYZ points or an axis to rotated around. The ROTATE command can be used while 3D modeling as long as all of the objects being rotated are 2D objects and located on the current UCS. If 3D objects are going to be rotated in 3D space, the ROTATE3D command must be used. See Figure 8-1.\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"600\"]\"\" Figure 8-1
    Rotating 3D Model in 3D Space[\/caption]\n\n
    \n

    AutoCAD Command: ROTATE3D<\/p>\n\n<\/header>\n

    \n\nThe ROTATE3D command is used to rotate objects in 3D space around an axis or two XY points.\n\nShortcut: none\n\n<\/div>\n<\/div>\n

    WORK ALONG: Rotating Wireframe Models in 3D Space<\/h1>\n

    Step 1<\/h2>\nUsing the NEW command, start a new drawing using the template: 3D Layout English<\/span>.\n

    Step 2<\/h2>\nSave and name the drawing: AutoCAD 3D Workalong 08-1<\/span>.\n

    Step 3<\/h2>\nOn layer: Model<\/span>, draw a wireframe model of the object shown in the multiview drawing. (Figure Step 3A and 3B)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"552\"]\"\" Figure Step 3A
    Dimensioned Multiview Drawing[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"305\"]\"\" Figure Step 3B
    SE Isometric View[\/caption]\n

    Step 4<\/h2>\nEnter the commands, as shown below, to set the TRIM and EXTEND commands while working in 3D.\n\nCommand: TRIM<\/strong>\n\nCurrent settings: Projection=None, Edge=No Extend\n\n(Note how in this case, the Projection is set to None and Edge to No Extend. Your computer might be different.)<\/em><\/span>\n\nSelect cutting edges ... (Select an object, any object)<\/em><\/span>\n\nSelect objects or <select all>: (Press Enter)<\/em><\/span>\n\nSelect object to trim or shift-select to extend or [Fence\/Crossing\/Project\/Edge\/eRase\/Undo]: P<\/strong>\n\nEnter a projection option [None\/Ucs\/View] <None>: U<\/strong>\n\n(Enter U for Ucs.)<\/em><\/span>\n\n[Fence\/Crossing\/Project\/Edge\/eRase\/Undo]: E<\/strong>\n\nEnter an implied edge extension mode [Extend\/No extend] <No Extend>: E<\/strong>\n\n(Enter E for Edge and then another for Extend. That means that the intersection of the two objects that you are trimming or extending do not have to physically intersect. AutoCAD will extend them to find the apparent intersection for you.)<\/em><\/span>\n\nCommand: EXTEND<\/strong>\n\nCurrent settings: Projection=Ucs, Edge=Extend\n\nSelect cutting edges ...\n\nSelect objects or <select all>:\n\n(By entering the EXTEND command, you will now see the settings are set for this command as well.)<\/span><\/em>\n\nCommand:\n
    AUTHOR'S COMMENTS:<\/strong> The way the TRIM and EXTEND commands projects into 3D space can be configured in your AutoCAD software. These settings are saved in the registry which means they will affect all drawings modified on your computer. You only are required to set either the TRIM or the EXTEND command and the settings will be used by both. Complete Step 4 to set your TRIM and EXTEND commands for the AutoCAD 3D book.<\/div>\n

    Step 5<\/h2>\nEnter the TRIM command as shown below. The Current settings: should be set as shown. If not, go back and redo Step 4. If they match, abort the command.\n\nCommand: TRIM<\/strong>\n\nCurrent settings: Projection=UCS, Edge=Extend\n\nSelect boundary edges ...\n

    Step 6<\/h2>\nEnter the ROTATE3D, as shown below, to rotate the model 90 degrees counterclockwise around the X axis. (Figure Step 6)\n\nCommand: ROTATE3D<\/strong>\n\nCurrent positive angle: ANGDIR=counterclockwise ANGBASE=0\n\nSelect objects:\n\nSpecify opposite corner: 22 found\n\n(Using a window, select all the objects)<\/em><\/span>\n\nSelect objects:\n\nSpecify first point on axis or define axis by [Object\/Last\/View\/Xaxis\/Yaxis\/Zaxis\/2points]: X<\/strong>\n\n(Rotate around the X axis.)<\/em><\/span>\n\nSpecify a point on the X axis <0,0,0>:\n\n(Press Enter to select 0,0,0 as the base point of the rotation.)<\/em><\/span>\n\nSpecify rotation angle or [Reference]: 90<\/strong>\n\n(The angle is positive since looking along the X axis towards 0,0,0, counterclockwise is the direction you want to rotate.)<\/em><\/span>\n\nCommand:\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"232\"]\"\" Figure Step 6[\/caption]\n\n
    AUTHOR'S COMMENTS:<\/strong> Unlike the ROTATE command, where the objects are rotated around a point, the ROTATE3D command rotates the objects around two XYZ points or an axis.<\/div>\n

    Step 7<\/h2>\nUsing what you learned in Step 6, rotate the model 90 degrees around the Y axis. This rotation will have be negative 90 degrees since the rotation is clockwise. (Figure Step 7)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"123\"]\"\" Figure Step 7[\/caption]\n\n
    AUTHOR'S COMMENTS: <\/strong>To find whether the rotation direction is either counterclockwise or clockwise, look at 0,0,0 from the positive end of the axis that you are rotating around.<\/div>\n

    Step 8<\/h2>\nChange the UCS to the front and locate it at the centre of the circle. (Figure Step 8)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"123\"]\"\" Figure Step 8[\/caption]\n

    Step 9<\/h2>\nOn layer: Construction<\/span>, draw a line from 0,0,0 at any angle and any length. The line you draw does not have to match the figure exactly. Draw it by eye. (Figure step 9)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"140\"]\"\" Figure Step 9[\/caption]\n

    Step 10<\/h2>\nChange to the Front view to ensure that the line was drawn correctly. (Figure Step 10)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"162\"]\"\" Figure Step 10[\/caption]\n\n
    \n\nMUST KNOW: <\/strong>The TRIM and EXTEND commands should have the following default settings when working in 3D:\n\nCurrent settings: Projection=UCS, Edge=Extend\n\n<\/div>\n

    Step 11<\/h2>\nChange the current view to SE Isometric and enter the ROTATE3D command, as shown below, to rotate the model using the Reference option. (Figure Step 11)\n\nCommand: ROTATE3D<\/strong>\n\nCurrent positive angle: ANGDIR=counterclockwise ANGBASE=0\n\nSelect objects:\n\n(Select all of the model objects in a window. Do not include the reference line that you just drew in the selection.)<\/em><\/span>\n\nSpecify opposite corner: 22 found\n\nSelect objects:\n\nSpecify first point on axis or define axis by\n\n[Object\/Last\/View\/Xaxis\/Yaxis\/Zaxis\/2points]: Z<\/strong>\n\n(Rotating around the Z axis.)<\/em><\/span>\n\nSpecify a point on the Z axis <0,0,0>:\n\nSpecify rotation angle or [Reference]: R <\/strong>\n\nSpecify the reference angle <0>: (cen) <\/em>P1 <\/strong>\n\nSpecify second point: (cen) <\/em>P2<\/strong>\n\nSpecify the new angle: (cen) <\/em>P1<\/strong>\n\n(Note that you have to select the P1 location twice.)<\/em><\/span>\n\nSpecify second point: (end) <\/em>P3<\/strong>\n\nCommand:\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"216\"]\"\" Figure Step 11[\/caption]\n\n
    MUST KNOW: <\/strong>Unlike the ROTATE command where the object is rotated around a point, the ROTATE3D uses two XYZ points to rotated around. You can use the X, Y or Z axis or two endpoints of a line.<\/div>\n

    Step 12<\/h2>\nThe wireframe model should now appear as shown in Figure Step 12A. Change the current view to Front to ensure that the model was rotated correctly. (Figure Step 12A and 12B)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"130\"]\"\" Figure Step 12A[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"134\"]\"\" Figure Step 12B[\/caption]\n\n
    AUTHOR'S COMMENTS: <\/strong><\/strong>There is no key for this workalong and any future workalongs in theAutoCAD 3D book. Keys are supplied are for the lab exercises. The reason for this is I want to slowly remove your reliance on using keys to check the accuracy of your models. Since keys are not available to you after you complete this book, you must learn how to check the accuracy of your models on your own.\n<\/strong><\/div>\n

    Step 13<\/h2>\nSave and close the drawing.\n
    \n\nUSER TIP: <\/strong>When using the ROTATE3D command, ensure that the ANGDIR and ANGBASE system variables are set as shown below. These setting will display when you enter the command, as you can see below. After you become more familiar using 3D, you can change these settings. While working on the AutoCAD 3D book, leave them set as shown.\n\nCommand: ROTATE3D<\/strong>\n\nCurrent positive angle: ANGDIR=counterclockwise ANGBASE=0\n\n<\/div>\n

    Key Principles<\/h1>\n
    \n

    Key Principles in Module 8<\/p>\n\n<\/header>\n

    \n
      \n \t
    1. While working in 3D, the TRIM and EXTEND commands should have the following default settings: Projection=UCS, Edge=Extend<\/li>\n \t
    2. The ROTATE command, used for a 2D rotate, uses a XY point to rotate For a 3D rotate using the ROTATE3D command, one of the axises, a line or two XYZ points must be specified to rotate around.<\/li>\n \t
    3. To find whether the 3D rotation direction is counterclockwise or clockwise, look at 0,0,0 from the positive end of the axis you are rotating around.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

      Lab Exercise 8-1<\/h1>\nTime allowed: 60 minutes.\n\n\n\n\n
      Drawing Name<\/th>\nTemplate<\/th>\nUnits<\/th>\n<\/tr>\n
      AutoCAD 3D Lab 08-1<\/td>\n3D Layout English<\/td>\nInches<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Step 1<\/h2>\nDraw all construction objects on layer: Construction<\/span> and all model objects on layer: Model.\n

      Step 2<\/h2>\nDraw a wireframe model of the object shown in the figure. (Figure Step 2A, 2B, 2C,and 2D)\n

      Step 3<\/h2>\nWhen complete, freeze layer: Construction<\/span>.\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 2A
      Dimensioned Multiview Drawing[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"189\"]\"\" Figure Step 2B
      Completed Wireframe Model SE Isometric View[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 2C
      Solid Model - SE Isometric View[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"300\"]\"\" Figure Step 2D
      Solid Model - NE Isometric View[\/caption]\n

      Step 4<\/h2>\nEnter the UNITS command. In the Units dialogue box, set the Insertion Units to Inches. Change the location of the UCS to World and check the model with the key.\n

      Step 5<\/h2>\nEnsure that the USC is set to World and the current view is SE Isometric. (Figure Step 5)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"260\"]\"\" Figure Step 5[\/caption]\n

      Step 6<\/h2>\nRotate the model 90 degrees around the X axis. (Figure Step 6)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"160\"]\"\" Figure Step 6[\/caption]\n

      Step 7<\/h2>\nRotate the model 90 degrees around the Y axis. (Figure Step 7)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"302\"]\"\" Figure Step 7[\/caption]\n

      Step 8<\/h2>\nRotate the model 90 degrees around the X axis. (Figure Step 8)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"298\"]\"\" Figure Step 8[\/caption]\n

      Step 9<\/h2>\nRotate the model 90 degrees around the Z axis. (Figure Step 9)\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"298\"]\"\" Figure Step 9[\/caption]\n\n \n
      AUTHOR'S COMMENTS:<\/strong> If you take note of where the WCS is located in each figure and where is was located in the previous figure, it will help you select which axis to rotate around.<\/div>\n

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

      Lab Exercise 8-2<\/h1>\nTime allowed: 40 minutes.\n\n\n\n\n
      Drawing Name<\/th>\nTemplate<\/th>\nUnits<\/th>\n<\/tr>\n
      AutoCAD 3D Lab 08-2<\/td>\n3D Layout English<\/td>\nInches<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

      Step 1<\/h2>\nDraw all construction objects on layer: Construction<\/span> and all model objects on layer: Model<\/span>.\n

      Step 2<\/h2>\nDraw a wireframe model of the object shown in the figure. (Figure Step 2A, 2B, 2C, and 2D)\n

      Step 3<\/h2>\nWhen complete, freeze layer: Construction<\/span>.\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"500\"]\"\" Figure Step 2A
      Dimensioned Multiview Drawing[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"246\"]\"\" Figure Step 2B
      Completed Wireframe Model SE Isometric View[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"362\"]\"\" Figure Step 2C
      Solid Model SE Isometric View[\/caption]\n\n[caption id=\"attachment_386\" align=\"aligncenter\" width=\"372\"]\"\" Figure Step 2D
      Solid Model NW Isometric View[\/caption]\n

      Step 4<\/h2>\nEnter the UNITS command. In the Units dialogue box, set the Insertion Units to Inches. Change the location of the UCS to World and check the model with the key.\n

      Step 5<\/h2>\nSave and close the drawing.","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. Apply the TRIM and EXTEND commands when trimming and extending in three dimensional wireframe modeling.<\/li>\n
      2. Apply the ROTATE3D command to rotate 3D models.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

        Rotating in 3D<\/h1>\n

        AutoCAD has individual 2D and 3D rotate commands. The 2D rotate command is ROTATE and in 3D, it is ROTATE3D. In this module, using the ROTATE3D command will be taught. It is used to rotate the model in 3D space. The main difference between the two commands is that the ROTATE command uses a XY point to rotate around and the ROTATE3D command uses two XYZ points or an axis to rotated around. The ROTATE command can be used while 3D modeling as long as all of the objects being rotated are 2D objects and located on the current UCS. If 3D objects are going to be rotated in 3D space, the ROTATE3D command must be used. See Figure 8-1.<\/p>\n

        \"\"
        Figure 8-1
        Rotating 3D Model in 3D Space<\/figcaption><\/figure>\n
        \n
        \n

        AutoCAD Command: ROTATE3D<\/p>\n<\/header>\n

        \n

        The ROTATE3D command is used to rotate objects in 3D space around an axis or two XY points.<\/p>\n

        Shortcut: none<\/p>\n<\/div>\n<\/div>\n

        WORK ALONG: Rotating Wireframe Models in 3D Space<\/h1>\n

        Step 1<\/h2>\n

        Using the NEW command, start a new drawing using the template: 3D Layout English<\/span>.<\/p>\n

        Step 2<\/h2>\n

        Save and name the drawing: AutoCAD 3D Workalong 08-1<\/span>.<\/p>\n

        Step 3<\/h2>\n

        On layer: Model<\/span>, draw a wireframe model of the object shown in the multiview drawing. (Figure Step 3A and 3B)<\/p>\n

        \"\"
        Figure Step 3A
        Dimensioned Multiview Drawing<\/figcaption><\/figure>\n
        \"\"
        Figure Step 3B
        SE Isometric View<\/figcaption><\/figure>\n

        Step 4<\/h2>\n

        Enter the commands, as shown below, to set the TRIM and EXTEND commands while working in 3D.<\/p>\n

        Command: TRIM<\/strong><\/p>\n

        Current settings: Projection=None, Edge=No Extend<\/p>\n

        (Note how in this case, the Projection is set to None and Edge to No Extend. Your computer might be different.)<\/em><\/span><\/p>\n

        Select cutting edges … (Select an object, any object)<\/em><\/span><\/p>\n

        Select objects or <select all>: (Press Enter)<\/em><\/span><\/p>\n

        Select object to trim or shift-select to extend or [Fence\/Crossing\/Project\/Edge\/eRase\/Undo]: P<\/strong><\/p>\n

        Enter a projection option [None\/Ucs\/View] <None>: U<\/strong><\/p>\n

        (Enter U for Ucs.)<\/em><\/span><\/p>\n

        [Fence\/Crossing\/Project\/Edge\/eRase\/Undo]: E<\/strong><\/p>\n

        Enter an implied edge extension mode [Extend\/No extend] <No Extend>: E<\/strong><\/p>\n

        (Enter E for Edge and then another for Extend. That means that the intersection of the two objects that you are trimming or extending do not have to physically intersect. AutoCAD will extend them to find the apparent intersection for you.)<\/em><\/span><\/p>\n

        Command: EXTEND<\/strong><\/p>\n

        Current settings: Projection=Ucs, Edge=Extend<\/p>\n

        Select cutting edges …<\/p>\n

        Select objects or <select all>:<\/p>\n

        (By entering the EXTEND command, you will now see the settings are set for this command as well.)<\/span><\/em><\/p>\n

        Command:<\/p>\n

        AUTHOR’S COMMENTS:<\/strong> The way the TRIM and EXTEND commands projects into 3D space can be configured in your AutoCAD software. These settings are saved in the registry which means they will affect all drawings modified on your computer. You only are required to set either the TRIM or the EXTEND command and the settings will be used by both. Complete Step 4 to set your TRIM and EXTEND commands for the AutoCAD 3D book.<\/div>\n

        Step 5<\/h2>\n

        Enter the TRIM command as shown below. The Current settings: should be set as shown. If not, go back and redo Step 4. If they match, abort the command.<\/p>\n

        Command: TRIM<\/strong><\/p>\n

        Current settings: Projection=UCS, Edge=Extend<\/p>\n

        Select boundary edges …<\/p>\n

        Step 6<\/h2>\n

        Enter the ROTATE3D, as shown below, to rotate the model 90 degrees counterclockwise around the X axis. (Figure Step 6)<\/p>\n

        Command: ROTATE3D<\/strong><\/p>\n

        Current positive angle: ANGDIR=counterclockwise ANGBASE=0<\/p>\n

        Select objects:<\/p>\n

        Specify opposite corner: 22 found<\/p>\n

        (Using a window, select all the objects)<\/em><\/span><\/p>\n

        Select objects:<\/p>\n

        Specify first point on axis or define axis by [Object\/Last\/View\/Xaxis\/Yaxis\/Zaxis\/2points]: X<\/strong><\/p>\n

        (Rotate around the X axis.)<\/em><\/span><\/p>\n

        Specify a point on the X axis <0,0,0>:<\/p>\n

        (Press Enter to select 0,0,0 as the base point of the rotation.)<\/em><\/span><\/p>\n

        Specify rotation angle or [Reference]: 90<\/strong><\/p>\n

        (The angle is positive since looking along the X axis towards 0,0,0, counterclockwise is the direction you want to rotate.)<\/em><\/span><\/p>\n

        Command:<\/p>\n

        \"\"
        Figure Step 6<\/figcaption><\/figure>\n
        AUTHOR’S COMMENTS:<\/strong> Unlike the ROTATE command, where the objects are rotated around a point, the ROTATE3D command rotates the objects around two XYZ points or an axis.<\/div>\n

        Step 7<\/h2>\n

        Using what you learned in Step 6, rotate the model 90 degrees around the Y axis. This rotation will have be negative 90 degrees since the rotation is clockwise. (Figure Step 7)<\/p>\n

        \"\"
        Figure Step 7<\/figcaption><\/figure>\n
        AUTHOR’S COMMENTS: <\/strong>To find whether the rotation direction is either counterclockwise or clockwise, look at 0,0,0 from the positive end of the axis that you are rotating around.<\/div>\n

        Step 8<\/h2>\n

        Change the UCS to the front and locate it at the centre of the circle. (Figure Step 8)<\/p>\n

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

        Step 9<\/h2>\n

        On layer: Construction<\/span>, draw a line from 0,0,0 at any angle and any length. The line you draw does not have to match the figure exactly. Draw it by eye. (Figure step 9)<\/p>\n

        \"\"
        Figure Step 9<\/figcaption><\/figure>\n

        Step 10<\/h2>\n

        Change to the Front view to ensure that the line was drawn correctly. (Figure Step 10)<\/p>\n

        \"\"
        Figure Step 10<\/figcaption><\/figure>\n
        \n

        MUST KNOW: <\/strong>The TRIM and EXTEND commands should have the following default settings when working in 3D:<\/p>\n

        Current settings: Projection=UCS, Edge=Extend<\/p>\n<\/div>\n

        Step 11<\/h2>\n

        Change the current view to SE Isometric and enter the ROTATE3D command, as shown below, to rotate the model using the Reference option. (Figure Step 11)<\/p>\n

        Command: ROTATE3D<\/strong><\/p>\n

        Current positive angle: ANGDIR=counterclockwise ANGBASE=0<\/p>\n

        Select objects:<\/p>\n

        (Select all of the model objects in a window. Do not include the reference line that you just drew in the selection.)<\/em><\/span><\/p>\n

        Specify opposite corner: 22 found<\/p>\n

        Select objects:<\/p>\n

        Specify first point on axis or define axis by<\/p>\n

        [Object\/Last\/View\/Xaxis\/Yaxis\/Zaxis\/2points]: Z<\/strong><\/p>\n

        (Rotating around the Z axis.)<\/em><\/span><\/p>\n

        Specify a point on the Z axis <0,0,0>:<\/p>\n

        Specify rotation angle or [Reference]: R <\/strong><\/p>\n

        Specify the reference angle <0>: (cen) <\/em>P1 <\/strong><\/p>\n

        Specify second point: (cen) <\/em>P2<\/strong><\/p>\n

        Specify the new angle: (cen) <\/em>P1<\/strong><\/p>\n

        (Note that you have to select the P1 location twice.)<\/em><\/span><\/p>\n

        Specify second point: (end) <\/em>P3<\/strong><\/p>\n

        Command:<\/p>\n

        \"\"
        Figure Step 11<\/figcaption><\/figure>\n
        MUST KNOW: <\/strong>Unlike the ROTATE command where the object is rotated around a point, the ROTATE3D uses two XYZ points to rotated around. You can use the X, Y or Z axis or two endpoints of a line.<\/div>\n

        Step 12<\/h2>\n

        The wireframe model should now appear as shown in Figure Step 12A. Change the current view to Front to ensure that the model was rotated correctly. (Figure Step 12A and 12B)<\/p>\n

        \"\"
        Figure Step 12A<\/figcaption><\/figure>\n
        \"\"
        Figure Step 12B<\/figcaption><\/figure>\n
        AUTHOR’S COMMENTS: <\/strong><\/strong>There is no key for this workalong and any future workalongs in theAutoCAD 3D book. Keys are supplied are for the lab exercises. The reason for this is I want to slowly remove your reliance on using keys to check the accuracy of your models. Since keys are not available to you after you complete this book, you must learn how to check the accuracy of your models on your own.
        \n<\/strong><\/div>\n

        Step 13<\/h2>\n

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

        \n

        USER TIP: <\/strong>When using the ROTATE3D command, ensure that the ANGDIR and ANGBASE system variables are set as shown below. These setting will display when you enter the command, as you can see below. After you become more familiar using 3D, you can change these settings. While working on the AutoCAD 3D book, leave them set as shown.<\/p>\n

        Command: ROTATE3D<\/strong><\/p>\n

        Current positive angle: ANGDIR=counterclockwise ANGBASE=0<\/p>\n<\/div>\n

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

        Key Principles in Module 8<\/p>\n<\/header>\n

        \n
          \n
        1. While working in 3D, the TRIM and EXTEND commands should have the following default settings: Projection=UCS, Edge=Extend<\/li>\n
        2. The ROTATE command, used for a 2D rotate, uses a XY point to rotate For a 3D rotate using the ROTATE3D command, one of the axises, a line or two XYZ points must be specified to rotate around.<\/li>\n
        3. To find whether the 3D rotation direction is counterclockwise or clockwise, look at 0,0,0 from the positive end of the axis you are rotating around.<\/li>\n<\/ol>\n<\/div>\n<\/div>\n

          Lab Exercise 8-1<\/h1>\n

          Time allowed: 60 minutes.<\/p>\n\n\n\n\n
          Drawing Name<\/th>\nTemplate<\/th>\nUnits<\/th>\n<\/tr>\n
          AutoCAD 3D Lab 08-1<\/td>\n3D Layout English<\/td>\nInches<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Step 1<\/h2>\n

          Draw all construction objects on layer: Construction<\/span> and all model objects on layer: Model.<\/p>\n

          Step 2<\/h2>\n

          Draw a wireframe model of the object shown in the figure. (Figure Step 2A, 2B, 2C,and 2D)<\/p>\n

          Step 3<\/h2>\n

          When complete, freeze layer: Construction<\/span>.<\/p>\n

          \"\"
          Figure Step 2A
          Dimensioned Multiview Drawing<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2B
          Completed Wireframe Model SE Isometric View<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2C
          Solid Model – SE Isometric View<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2D
          Solid Model – NE Isometric View<\/figcaption><\/figure>\n

          Step 4<\/h2>\n

          Enter the UNITS command. In the Units dialogue box, set the Insertion Units to Inches. Change the location of the UCS to World and check the model with the key.<\/p>\n

          Step 5<\/h2>\n

          Ensure that the USC is set to World and the current view is SE Isometric. (Figure Step 5)<\/p>\n

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

          Step 6<\/h2>\n

          Rotate the model 90 degrees around the X axis. (Figure Step 6)<\/p>\n

          \"\"
          Figure Step 6<\/figcaption><\/figure>\n

          Step 7<\/h2>\n

          Rotate the model 90 degrees around the Y axis. (Figure Step 7)<\/p>\n

          \"\"
          Figure Step 7<\/figcaption><\/figure>\n

          Step 8<\/h2>\n

          Rotate the model 90 degrees around the X axis. (Figure Step 8)<\/p>\n

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

          Step 9<\/h2>\n

          Rotate the model 90 degrees around the Z axis. (Figure Step 9)<\/p>\n

          \"\"
          Figure Step 9<\/figcaption><\/figure>\n

           <\/p>\n

          AUTHOR’S COMMENTS:<\/strong> If you take note of where the WCS is located in each figure and where is was located in the previous figure, it will help you select which axis to rotate around.<\/div>\n

          Step 10<\/h2>\n

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

          Lab Exercise 8-2<\/h1>\n

          Time allowed: 40 minutes.<\/p>\n\n\n\n\n
          Drawing Name<\/th>\nTemplate<\/th>\nUnits<\/th>\n<\/tr>\n
          AutoCAD 3D Lab 08-2<\/td>\n3D Layout English<\/td>\nInches<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

          Step 1<\/h2>\n

          Draw all construction objects on layer: Construction<\/span> and all model objects on layer: Model<\/span>.<\/p>\n

          Step 2<\/h2>\n

          Draw a wireframe model of the object shown in the figure. (Figure Step 2A, 2B, 2C, and 2D)<\/p>\n

          Step 3<\/h2>\n

          When complete, freeze layer: Construction<\/span>.<\/p>\n

          \"\"
          Figure Step 2A
          Dimensioned Multiview Drawing<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2B
          Completed Wireframe Model SE Isometric View<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2C
          Solid Model SE Isometric View<\/figcaption><\/figure>\n
          \"\"
          Figure Step 2D
          Solid Model NW Isometric View<\/figcaption><\/figure>\n

          Step 4<\/h2>\n

          Enter the UNITS command. In the Units dialogue box, set the Insertion Units to Inches. Change the location of the UCS to World and check the model with the key.<\/p>\n

          Step 5<\/h2>\n

          Save and close the drawing.<\/p>\n","protected":false},"author":90,"menu_order":2,"template":"","meta":{"pb_show_title":"on","pb_short_title":"","pb_subtitle":"","pb_authors":[],"pb_section_license":""},"chapter-type":[],"contributor":[],"license":[],"class_list":["post-387","chapter","type-chapter","status-publish","hentry"],"part":334,"_links":{"self":[{"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/chapters\/387","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/chapters"}],"about":[{"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/wp\/v2\/types\/chapter"}],"author":[{"embeddable":true,"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/wp\/v2\/users\/90"}],"version-history":[{"count":1,"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/chapters\/387\/revisions"}],"predecessor-version":[{"id":388,"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/chapters\/387\/revisions\/388"}],"part":[{"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/parts\/334"}],"metadata":[{"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/chapters\/387\/metadata\/"}],"wp:attachment":[{"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/wp\/v2\/media?parent=387"}],"wp:term":[{"taxonomy":"chapter-type","embeddable":true,"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/pressbooks\/v2\/chapter-type?post=387"},{"taxonomy":"contributor","embeddable":true,"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/wp\/v2\/contributor?post=387"},{"taxonomy":"license","embeddable":true,"href":"https:\/\/opentextbc.ca\/autocad3d\/wp-json\/wp\/v2\/license?post=387"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}