At about this time I saw that the "Universe" series was two distinct though connected geometries. The first, "Open" and its derivatives, essentially surfaces caused by a rotational conjunction of like parts; the second group helical shapes, twisting because of a slight displacement of mirror matched annuli.
1: "Emergent Universe" c. 1980. Vinyl ink on vinyl c. 3'x3'x24'.
2: "Double Diminution x 9" c. 1981. 14' x various. Vinyl ink on vinyl
3: "Asymmetric Universe" c. 1981. Vinyl ink on vinyl 4'x2'x3'