I wondered why the part has been given the name, and whether it is intended to have a special artistic connotation. I started with a disctionary definition:
a. a close association with or detailed knowledge or deep understanding of a place, subject, period of history, etc.:
an intimacy with Japan.
b. an act or expression serving as a token of familiarity, affection, or the like:
to allow the intimacy of using first names.
c. the quality of being comfortable, warm, or familiar:
the intimacy of the room.
From this I might conjecture that the connection was simply the need for close observation of forms, and understanding of the media needed to complete the part. That was sufficient, but was there a particular art meaning I might have missed?
To consider this I decided to search the resources the UCA makes available for us. If it achieved nothing else it would give me some practice in the application of these resources to a research question. I found the following book on there:
Art and Intimacy : How the Arts Began
As an OCA student on a degree course you can borrow it for free electronically from the UCA. I found the following interesting
p72, Art and Intimacy : How the Arts Began, Ellen Dissanayake, ISBN-13: 978-0295991962
How do these connect? The author asserts that the development of art is fundamental to the development of humanity, and flows from the intimacy between people. Thus, art is inevitable for humanity and the meaning of art flows from personal intimacy. I suspect, however, the initial inference from the dictionary definition is more likely as an explanation of the part’s name. It does illustrate the materials available in the UCA library though.