Tuesday, April 12, 2011
Monday, April 11, 2011
Descripitve Geometry
Manipulating picture planes in order to identify true size, true shape, true length, ture angle, intersection points, and distances
- True Length Lines
- if a line is parallel to a fold line in one view, it is true length in the next view
- Point View
- find a true length line
- create a fold line perpendicular to the true length line
- type "po" for point
- change "pdmode" to 96
- change "pdsize" to .1
- True Size and Shape (TSS) Surface
- first find true length of one line and point view of that line
- crate fold line perpendicular to the true length line to get the edge view of the surface
- crate fold line parallel to edge view
- Add-A-Line
- Draw a line parallel to F1 from 1 point to the line you want true length of
- Project the point where it hits the line you want true length of to the next view onthe same line
- connect that point to the point you started with which gives you a true length line
- create fold line perpendicular to true lenth which will give you your edge view including a point
- create fold line parallel to edge view which will give you your TSS surface
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