Part 4: Creating the Handle
 
 
 

In this section, you will create a hole through the vacuum cleaner body to create a handle. As before, when you built the main body shape, you will overbuild surfaces to create an intersection.

This time, however, you will not use the intersection and trim tools to create a sharp-edged shape. Instead, you will use the Surface Fillet tool to create a rounded edge and trim at the same time.

Opening the tutorial file (optional)

If you successfully completed Part 3, you can proceed directly to the next step: Creating the handle surface below.

If you were not successful in part 3, open the file called vacuum_part4.wire, located in the wire directory of the CourseWare project. This file contains the completed model from Part 3.

Watch Part 4 of the tutorial.

Creating the handle surface

You will create the handle using a skin surface, built from the handle curve provided in the tutorial file.

First, you will make a copy of the handle curve and move it to the side of the vacuum, to create the two curves needed for the skin.

  1. Choose Pick > Object and select the oval shaped handle curve.

  2. Choose Edit > Copy followed by Edit > Paste . The screen appears the same, but a second curve has been created and placed on top of the original, and is selected, ready to be moved.
  3. Choose Transform > Move . Since you are working in the perspective view, the mouse buttons can be used to specify a move in the x, y, or z direction.

    Click and hold the and move the second curve in the negative y-direction. Move the curve so it is well outside the vacuum body surfaces.

  4. Use the F9 hotkey to display all four views, to check that the copied curve is outside the main body.

  5. Use the F8 hotkey to return to the perspective view.

    Next, you will create a skin surface between the two handle curves.

  6. Choose the Surfaces > Skin tool.
  7. You are prompted to select the first curve. Click the first handle curve to select it for the skin surface.

    The curve is highlighted, and you are prompted to select the next curve. Click the second handle curve to select it.

    The skin surface is created and highlighted in white.

  8. Choose Pick > Nothing to deselect the skin surface.

  9. Use diagnostic Shading to check that the handle surface passes through the body surfaces.

    TipIf the handle surface falls short of the body surfaces, use Pick > Object to select the second handle curve. Then, use Transform > Move with the to adjust the position of the curve. Because the skin surface has construction history, it will be rebuilt to the new curve position when the mouse button is released.
  10. Return to a wireframe view by selecting the wireframe icon in diagnostic Shading.

Creating the handle fillet

Next, you will use the Surface Fillet tool to trim the handle and upper body surfaces, and to create a rounded edge.

  1. Choose Surfaces > Surface Fillet . The settings you used before will be used for this fillet surface, so you don’t need to open the option box.
    NoteIf you have exited Alias since building the last fillet, see Creating the nozzle fillet for the correct Surface Fillet options to use.

    You are prompted to select the first set of surfaces.

  2. Click the upper surface to select it.

    The surface is selected and highlighted in pink, and an Accept button appears in the lower right corner of the view.

  3. Click the Accept box to select the first surface for filleting.

    You are then prompted to select the second set of surfaces.

  4. Click the handle surface to select it.

    The surface is selected and highlighted in yellow, and an Accept box appears in the bottom right corner of the view.

  5. Click Accept to select the second surface for filleting.

    Arrows appear on both surfaces, indicating on which side of the surfaces the fillet will be built.

    The pink arrow needs to point in towards the inside of the vacuum surfaces. If it is pointing out from the surfaces, click the arrow to reverse it.

    The yellow arrow needs to point outwards from the handle surface. If it is pointing in towards the center of the handle, click the arrow to reverse it.

  6. Click Build.

    A small fillet surface is created, and the upper and handle surfaces are trimmed.

    To create a comfortable handle, a larger fillet is required.

  7. Choose Surfaces > Surface Fillet . to open the option window.
  8. Type 1.25 in the Chordal Distance field and press (Windows) or (Mac) to adjust the fillet size.

    A Recalc button appears at the bottom right corner of the view.

  9. Click Recalc to rebuild the fillet.

    The fillet is rebuilt to the larger size, providing a more comfortable handle design.

  10. Choose Pick > Nothing to deselect all the surfaces.

  11. You have now completed the main body shape for the vacuum cleaner design.

Save your work

  1. Choose File > Save As to save the current scene.
  2. Save your work in the wire directory of the Lessons project.
  3. Name your file myvacuum4.wire.