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ArtZone Heading
An Arm From Profile Splines
Added on: Wed Jan 10 2001
Page: 2 

There are a few ways to make easy arms. This tutorial will teach you how to loft them from four profile interpolated splines. Although making a basic arm is easy, making it look detailed and defined is yet another story for another time and tutorial. Here goes...

Start up Rhinoceros 3D and pick the interpolated curve tool by using the "InterpCrv"
command. This will enable you to draw the curves as seen i the figure below. You can see 4 curves in the 2 different viewports in Figure 1.

Figure 1
4 Profile Arm Splines

Next you must pick loft from the surface menu or use the command "loft". This enables the loft tool. Now you must pick each of the splines in a clockwise rotation (or counterclockwise, it doesnt really matter as long as they are in order).  Then press enter to send the command and bring up a dialog box.

Note: The reason why we use an Interpolated curve is because the polyline has jagged, sharp edges i which we do not need for this model.

Now a dialog box should pop up and have a few different settings. In the Figure below you
can view the settings that we have used in making this model. You should later go back and check individually what each setting does.

Figure 2
Loft Options

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