Portrait Sculpture Profiles System
This system uses a camera and a hard-line shadow cast onto the subject to
produce silhouette templates matching the subject's profiles. Then negative
templates are made that allow rough-shaping the clay mass for portrait busts.
The chair and support rod with head rest.
The complete system.
The central bolt is the reference point and of known length. The camera is
kept at a constant distance of 35", exactly vertical, with zoom fixed and with
the flash turned off. The camera angle over from the shadow plane is 45
degrees. There are 12 profiles in all, taken at 30-degree intervals.
The 4" reference bolt is positioned near the top of the head and must be
fully visible in all 12 photos. The camera radius arm and shadow caster arm
are moved to hit against stop pins around the protractor disk at the top.
The first victim.
After all shots are taken, they must be elongated to make up for fore-
shortening of the shadow line profile. The amount of elongation must make the
distance from the reference bolt to the shadow board's edge, 8", exactly twice
the length of the 4" reference bolt. This "un-foreshortens" the 12 profiles.
The camera images are printed out in native 8" x 10" size. The images can
then be enlarged or shrunk as required by the image processing software.
The first outline template.
A silhouette would not show this profile, since the doughboy's left cheek
would block the inside of the mouth and the left foot would block the crotch.
The first live victim.
This image has been stretched.
This matches her front silhouette, profile number 1. The paper outlines are
transferred to sheet plastic or aluminum using carbon paper. They are then
cut out with tin snips, a coping saw, jeweller's saw or power scroll saw.
The reference bolt is the common point for all profiles. So the armature
must have a 1/4" vertical rod at this point for all profiles. The profiles are
pushed into the clay along the 12 radius lines until they hit the reference
rod. The clay is then scooped away to match the profiles. Then final shaping
is done manually.
NOTE: Pin long hair back and up to reveal as much of the head as possible.