We didn’t look at this in class, but the “History” functionality in Rhino could be very useful as you are work on building the bentwood chair. This functionality will link input and output geometry. In other words, it can connect a curve (input geometry) with a pipe (output geometry) so that if the input curve is manipulated, the resulting output surface will follow this change.
More information here:
http://docs.mcneel.com/rhino/5/help/en-us/commands/history.htm
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