EGR-110-40, Burgener, Monday October 16th, 2000
Administrative notes and announcements: This coming
Saturday, from 10:00 to 12:00 I'll be proctoring a make-up
exam for at least one student who missed Monday's (today's) class. If you want to
come and get some one-on-one tutoring on anything we've covered, now's
your chance. Be in the classroom from 10:00 to 12:00 this Saturday.
Midterm was during this class, and was open book. Everything (except classmates) was allowed. I asked the students if they'd like the Midterm to be 40 points (as was published on the exam papers) or 80 points, since the Quiz last week was 54 points, and few students did well on it. They chose to make the Midterm 80 points, instead of the 40 points printed on the paper.
I also asked the class if they wanted the Midterm before or after the new material. The class voted to have the Midterm early in class, with about 90 minutes (about) time limits. The actual time I gave them, based on how many got so far, was _____ minutes.
Don't forget this Friday is the last day to drop the class.
Also, once again, please don't let me catch any of you sharing files. There're lots of things within a file to show evidence it's a copy of another.
Handed out: nothing, except the Midterm exam.
Returned and Reviewed: Page 248, Shaft Base, 2D and Extrude assignment. They generally turned out pretty well. You're still having trouble with linetypes and LTSCALE, though.
New AutoCAD Topic and Demonstration:
Make a new UCS on the Front side of a box, draw a construction line, and slice off (or rotate) to make the inclined surface.
Layouts - Click "Layout1" tab (which you may want to rename), click OK, and erase everything.
I explained Paper Space (like a storefront window with television sets showing the model) and Layouts (like a stored Paper Space, but with plotting instructions included).
- Draw and copy Rectangles, with Ortho on, for "TV sets" (Viewports)
- MVIEW, Object, to convert the Rectangles into Viewports
- ZOOM XP to set the "scale" equal in all Viewports,
- Notice you can toggle into "Model Space" or "Paper Space" by clicking inside or outside one of your new Viewports. You don't HAVE to switch to the Model tab.
Return to the Model tab, and create a UCS on the slanted surface, rotated the proper angle, to later develop the Auxiliary view of the inclined surface. Save the View as "Auxiliary View" (or later use DVIEW TWist to "rotate" the Auxiliary view to line it with the respective "edge view").
Return to the Layout Tab, develop a round Viewport by converting a circle.
Within the circular Viewport, restore the Auxiliary View, showing the inclined surface, rotated.
Zoom XP to match the scale in all Viewports.
Toggling back and forth between Model Space and Paper Space (on the Layout Tab), draw construction lines to arrange the new Auxiliary view Viewport with the appropriate Orthographic view. Use Osnaps on Model Space lines.
In Paper Space carefully move the Viewports to center them on the paper.
Add the section line (on Layer Section, in Phantom or Dashed wide polyline) and label the Auxiliary View, like we did on Page 248.
Next project: Auxiliary views. Select a project from Page 415 through 418, for the entire class to do over the next 2 weeks. Over the next week I'll finish it and point out AutoCAD commands needed that we haven't covered yet. We'll solid model the object you choose, and then use a layout (formerly AutoCAD's Paper Space) to display enough orthographic views (2 or 3, as necessary), and at least one Auxiliary view showing "true size" for the inclined surface/es. See page 392 and 293 for a sample "layout" of views.
Due next week: Nothing !! Keep busy on the solid model with auxiliary view (see above) is due in 2 more weeks (Monday, November 30th).
Let the midterm begin!
Here's the practical part of the exam, for guidance. Read all the requirments on your exam paper.
Heads up !
In the next week (or two) we'll study dimensioning. In addition to typical standards in industry, we'll learn how to set AutoCAD's "dimension variables" by type-in and by dialog box. Learning the type-in method is better in the long run, because you can later write script files and programs to set dimension styles.