Join Scott Onstott for an in-depth discussion in this video Lofting with the Path option, part of AutoCAD: 3D Surface Model Design (2014).
- In this video, we will loft…a frame element that follows this curved path.…Before we can loft the element, however,…we need to draw in the cross sections.…We have some information here in the 2D layer…that we can use in regards to the size of the frame.…I'll zoom in here and let's measure a distance.…I'll type DI for dist, Enter.…Using object snap, I'll click here and here.…
It's 12 millimeters across.…We need to have a circle up here…that's got a diameter of 12.…To place that circle, we need to think about…the user coordinates system in it's orientation.…Right now, it is oriented flat…with respect to this triangle.…We need to rotate that system 90 degrees about the Y axis.…Type UCS, Enter, Y, Enter, Enter.…
Now that's the correct orientation so that the X Y plane…is matching the direction I want to draw the circle in.…Type CI for circle, specify the center point right there,…use the diameter option, and type 12, Enter.…That's how the frame is going to…terminate up there in a circle.…Over here, it looks like the frame element gets thicker.…
Author
Scott Onstott
Released
11/11/2014- Creating layers for 3D modeling
- Extracting isolines
- Trimming and extending surfaces
- Extruding 2D curves into 3D surfaces
- Lofting cross sections
- Converting solids into surfaces
- Sculpting watertight surfaces into solids
- Sweeping and sculpting
- Revolving boundaries to create surfaces
- Welding objects together with Fillet Edge
- Rebuilding NURBS surfaces
- Offsetting a surface
Skill Level Intermediate
Duration
Views
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Introduction
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Welcome42s
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1. Modeling a Bicycle Frame
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Extracting isolines4m 10s
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Drawing a profile6m 6s
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Trimming surfaces4m 42s
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Revolving profiles3m 8s
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Lofting with the Path option2m 45s
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2. Creating the Belt-Tensioning Mechanism
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Extruding a region2m 32s
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Modeling fasteners5m 30s
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3. Building the Drivetrain Components
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Using Booleans on 2D regions4m 35s
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4. Modeling the Rear Brakes
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5. Creating the Rear Wheel
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Sweeping and sculpting6m 29s
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6. Making the Power Components
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Smoothing a mesh object4m 13s
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Tilting up extruded objects4m 30s
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7. Modeling the Front End
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8. Creating the Handlebars
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9. Making the Seat
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Conclusion
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Next steps15s
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Video: Lofting with the Path option