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Fair 
Access: Open this function from the following location:
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Select Faces > Modify Faces > Fair from the menu bar.
Change the shape of a face by fairing it (smoothing and reducing the number of control points).
Simplify a face by approximating analytical faces. This can be used to reduce "waviness" of a face.
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Demo: Press the button below to view
a short movie demonstrating the function:
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Practice: Press the button below to open Cimatron with a practice ELT file similar to that used to create the movie (if the relevant feature already exists in the ELT file, you can either edit it or delete it and create a new feature). |
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General Interaction
The following is the Feature Guide for Modify Fair.
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Tip:
Required Step 1
: Select the face to be faired and set the tolerance.
Detailed Interaction
See Options and Results.
Geometric Simplification
Imported parts may contain faces that appear analytic when displayed, but are actually created from splines. Geometry simplification can be applied to spline faces, which are then converted to corresponding analytic forms (for example, plane, cone, torus, sphere, and so on) wherever possible. Geometry simplification results in a reduction of data size and improved operational speed. Simplification of splines to analytic forms works for planes, cylinders, circular cones, tori, and spheres.
This phase should be completed before proceeding with stitching or geometry creation, unless you know for sure that the part contains only analytic data.
Geometry Simplification Tolerance
If the tolerance is tight (as the default is), only spline faces that are exact analytic surfaces will be simplified. If the tolerance is loosened, then approximate analytic fits to splines are obtained. In such cases, the gaps between surfaces may increase, and healing in subsequent operations may be more difficult. The need for increasing tolerances typically arises when analytic surfaces are output as NUBS surfaces rather than NURBS surfaces. The default tolerance is 0.1 (length units), which gives a very good approximation of analytic faces to spline faces in most parts.
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