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Table Of Contents
Using Construction Geometry | 107
To create a construction line
1 Create a construction line.
Context Menu In the graphics area, right-click and choose 2D Sketching
Construction Line.
2 Draw the line diagonally across the sketch.
Mechanical Desktop draws the line on a new layer called
AM_CON. The line
is yellow and drawn with the
HIDDEN linetype. Because the linetype is
different from the one used to draw the sketch, the line is considered
construction geometry. It is used only in this sketch.
3 Use
AMRSOLVESK to append the profile.
Context Menu In the graphics area, right-click and choose Sketch Solving
Append.
4 Select the construction line.
5 Re-examine the assumed constraints.
Adding Project Constraints
Mechanical Desktop recognizes nine lines in the sketch. The sketch requires
two more constraints because you added a construction line.
Next, project the construction line to each vertex that serves as an inner
corner of a stair.
To place a project constraint, specify a vertex and then select the construc-
tion line. Depending on how closely you drew the construction line to the
vertices, some constraints may have already been applied.