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Using the Ortho modeling aid

From: Rhino 4 Essential Training

Video: Using the Ortho modeling aid

Next up, we'll review the second of Rhino's modeling aids in order of its location on the interface called Ortho. The Ortho modeling aid or Ortho Snap is simply an angle constraint that is used to verify that any geometry being created or moved is done so along a specified angle. Let's take a look where it's located. Here is the label Ortho. We click it to activate it and click it again to turn it off, so it's just toggle. You can also use the shortcut F8 key. It's the same result.

Using the Ortho modeling aid

Next up, we'll review the second of Rhino's modeling aids in order of its location on the interface called Ortho. The Ortho modeling aid or Ortho Snap is simply an angle constraint that is used to verify that any geometry being created or moved is done so along a specified angle. Let's take a look where it's located. Here is the label Ortho. We click it to activate it and click it again to turn it off, so it's just toggle. You can also use the shortcut F8 key. It's the same result.

I'm going to leave the settings from the file to file and go ahead and just try to draw lines and see what happens. So, I'm going to go over here and draw a Line Segment with a right-click, and I'm going to check one more setting over here at the Osnap. I want to start it at this point, so I'm going to verify that that is currently set to a Point object snap, which we'll discuss later in the chapter. So I am snapping to the point. Since Ortho is not on, I can freely draw at any angle.

I'm going to hit the F8 key to turn it back on. Now I'm snapping every 90 degrees, and that's the default setting. So, I'm going to escape out of this command and go change that. I'm going to go to the Options Button, and under Modeling Aids, you can see the 90. I'm going to change that over to 45 degrees, see if that helps. Go back to Line Segments, which is a right-click. We're snapping to the point. Now as I go up it's constrained to vertical and jumping every 45 degrees, so that can go in any direction.

I'm still not happy with that angle. I'm going to escape out of this command and go one more time back to the Options, type in 30, hit OK, and then do one more line segments That looks about right. Now you could additionally change that to a smaller increment, which would be very tempting, such as every five or ten degrees, but I don't recommend going any smaller than about 30 because it's way too easy to make a mistake.

20 degrees will look almost like 25 degrees. You won't notice it till much later. One more shortcut tip. I'm going to draw another segment, just as a test, turn the Ortho snap off. Now I can activate it any time just by holding down the Shift key. So notice it activates without going down to click on the Ortho button, and escape out of that. So, the Ortho Snap is a great example of a very simple and sometimes easy to forget modeling aid that's often overlooked.

Another nice feature of the Ortho Snap is you don't even need to turn it on when needed. Similar to many 2D programs, you can always hold down the Shift key when drawing or moving and the Ortho Snap will be enacted just for that command. It's a nice shortcut that will greatly speed your workflow.

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Rhino 4 Essential Training

67 video lessons · 16978 viewers

Dave Schultze
Author

 
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  1. 4m 13s
    1. Welcome
      1m 1s
    2. Using the exercise files
      28s
    3. Recommended hardware
      2m 44s
  2. 19m 8s
    1. Understanding the three types of entities: curves, surfaces, and solids
      5m 51s
    2. Comparing Bezier curves, B-splines, and NURBS objects
      3m 35s
    3. Comparing isocurve surfaces and mesh surfaces
      4m 50s
    4. Setting measurement units and tolerance
      4m 52s
  3. 18m 16s
    1. Introducing the viewport
      3m 20s
    2. Using construction planes to anchor model design
      5m 27s
    3. Changing the way a model is viewed using shading modes
      3m 11s
    4. Navigating the viewport with pan, zoom, rotate, and reset controls
      3m 24s
    5. Exploring help options
      2m 54s
  4. 29m 48s
    1. Understanding Rhino's command philosophy
      3m 10s
    2. Using toolbars and docking buttons to a toolbar
      3m 33s
    3. Navigating the geometry menus using a "department store" analogy
      3m 35s
    4. Using the command line and status bar to get feedback
      4m 56s
    5. Modifying the nudge control and setting other preferences
      6m 54s
    6. Using the Properties window
      3m 1s
    7. Opening and saving files
      4m 39s
  5. 14m 24s
    1. Creating basic objects: curves, surfaces, and solids
      4m 22s
    2. Performing basic transformations
      3m 14s
    3. Selecting objects
      3m 37s
    4. Organizing a project using layers
      3m 11s
  6. 21m 18s
    1. Understanding lines and polylines
      4m 10s
    2. Building rectangles and polygons
      5m 12s
    3. Creating arcs, circles, and ellipses
      7m 8s
    4. Drawing freeform curves
      4m 48s
  7. 47m 36s
    1. Comparing different types of 3D surfaces
      7m 11s
    2. Extruding surfaces to create features in a model
      8m 58s
    3. Creating surfaces with lofts
      7m 49s
    4. Using Revolve and Rail Revolve to create surfaces
      7m 42s
    5. Using Sweep Rail to create a 3D claw
      7m 49s
    6. Creating complex surface shapes using Network Surface
      8m 7s
  8. 46m 48s
    1. Introducing solids
      5m 42s
    2. Making solids with primitives
      5m 41s
    3. Extruding curves to create solids without primitives
      8m 59s
    4. Creating unique shapes with the union, difference, and intersection Boolean operators
      6m 46s
    5. Troubleshooting solids and Booleans
      8m 53s
    6. Editing with the solid edit tools
      6m 20s
    7. Creating and transforming holes in solids
      4m 27s
  9. 27m 8s
    1. Understanding Rhino's modeling aids
      3m 59s
    2. Working with the Grid Snap modeling aid
      2m 22s
    3. Using the Ortho modeling aid
      3m 4s
    4. Using the Planar modeling aid
      2m 4s
    5. Incorporating the Osnap modeling aid into your workflow
      6m 7s
    6. Understanding the Project and Smart Track modeling aids
      4m 42s
    7. Setting cursor constraints
      4m 50s
  10. 50m 14s
    1. Editing corners with Fillet and Chamfer
      7m 38s
    2. Trimming and splitting with curve Booleans
      5m 37s
    3. Moving and rotating objects with the Drag and Nudge tools
      7m 24s
    4. Copying and pasting objects
      4m 10s
    5. Understanding how Rhino uses Undo and Redo
      3m 42s
    6. Grouping objects
      3m 21s
    7. Scaling objects
      6m 40s
    8. Duplicating objects using the Mirror command
      6m 36s
    9. Making copies and structured sets using arrays
      5m 6s
  11. 20m 37s
    1. Using the Analysis toolbar to understand characteristics of a model
      6m 14s
    2. Defining degrees of curve and surfaces
      6m 6s
    3. Using Rebuild and Change Degree
      8m 17s
  12. 26m 21s
    1. Measuring and labeling values on a model using dimensioning
      5m 22s
    2. Creating screen captures for quick proofs
      5m 16s
    3. Creating 2D views of a 3D model
      6m 44s
    4. Rendering a project
      8m 59s
  13. 22m 5s
    1. Preparing a model for prototyping by confirming that all gaps are closed
      5m 17s
    2. Using the "shelling" technique to create wall thickness
      10m 54s
    3. Exporting to the STL format for 3D printing
      5m 54s
  14. 14s
    1. Goodbye
      14s

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