
concept with his son Michael Mallary, an engineer,
physicist, and MIT graduate, and together they
wrote a program that generated the first computer
designed sculpture.
Together, Robert and Michael Mallary
developed a Fortran computer program named
TRAN2. From two contour profiles drawn by the
artist, consisting of the X and Y coordinates, four
points on ellipses were read o graph paper and
then transferred onto punch cards. e cards were
read by the IBM 1130 and ploer print outs on the
IBM 1627 revealed the layers of the sculpture to be
constructed. According to Michael Mallary: “Aer
reading the data cards, TRAN2 calculated hundreds
of connected contour points (i.e. points on the slice
perimeter) for each horizontal slice.”
What the program had calculated were
the layers of the sculpture and “the plot for each
layer was then glued to a sheet of plastic or wood
and the slice perimeter was manually cut with a
band saw. All of the slices were then stacked and
bonded together.” e layers were then sanded and
finished. Atop a wooden base, the resulting QUAD
sculptures hint at a classical influence and the
human form, while retaining a distinctive modern
approach. Mallary had arrived at an early form of
additive 3D printing.
“The computer is portentous, because for the rst
time the sculptor has access to a tool which can
be used not only for executing a work of art,
but conceiving one as well. It has already been
demonstrated that the computer can assist the
sculptor to some degree; in the future it may,
in eect, come to collaborate with him.”
—Robert Mallary,
Artforum
, May 1969
6
First TRAN2 Plot (1968)
QUAD Prole Printouts (1968)