9

1164 Chapter 9: Surface Modeling
Flipping the direction of a trim
Trim Curve—When on (the default), tri ms the
parentcurveagainstthefilletcurve.Whenoff,the
parent isn’t trimmed.
Flip Trim—When on, trims in the opposite
direction.
Seed 1 and S eed 2—Change the U location of the
seed value on the first and second curves. If there
is a choice of direct ions, the direction indicated
by the seed points is the one us ed to create the
chamfer.
ReplaceFirstCurveandReplaceSecondCurve—Let
you replace the parent curves. Click the button,
then click the curve to replace the original first or
second curve.
Fi l l e t Curve
Selec t NURBS o b je ct. > M odify panel > Create Curves
rollout > Dependent Cur ves group box > Fillet button
Select NURBS object. > Modify panel > NURBS toolbox >
Create Fillet Curve button
Fillet creates a curve that is a rounded corner
between two parent curves.
Above: Two simple fillets
Below: Flip Trim changes the direction of trimming and the
shape the fillet.
Procedure
To create a fillet cur ve:
1.
In a NURBS object that contains at least
two curves, turn on
Fillet.
2. Click one curve nea
rtheendthatyouwant
to connect. The end that will be connected
is highlighted. Without releasing the mouse
button, drag to th
eendoftheothercurvethat
you want to connect. When the end that you
want to connect is highlig hted, release the
mouse button.
Afilletcurveis
created. It t rims the ends of the
parentcurvetomatchthefillet.Thefilletis
not necessarily placed at the endpoints of the
parent cur ves:
placement depends on the value
of the Radius parameter.
Changing the position or the curvature of either
parent curve can change the fillet as well.
The p arent curves must b e coplanar.
3. Adjust the fillet parameters.