john mcmahon: teef(3D scanning)

i never messed with a 3D scanner before
so that was something i definitely wanted to test out
for my first scan i wanted to keep it simple
was searching for an object to scan and came across
my friend sam's car sculpture that was laying around
scanned the car but at a super high resolution
which didn't leave much room on the computer to complete the steps for outputting
after referring with prof. scott, he told me to step the res. down
so i scanned my teeth(a plaster model of my teeth)
the goal was to scan the uppers and lowers and alter them
and output to the wax printer in the jewerly building
but once i over came the scanning process
i ran into some issues with offsetting the surfaces to create digital "fronts"
the offset that the wax printer needed to meet the minimum output
was to much for rapidworks and rhino to do a simple offset
the larger offset was producing self intersecting surfaces
a no no in rapid prototyping
need more time to troubleshoot through this issue




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john mcmahon: Corrugation - Plica cont.

got caught up in the rush so there is a lil gap in the pics
painting, cement casting and acrylic bending was not recorded
but i have the jig i used for bending the extruded acrylic rods
and then i jump right to the presentation pics, fdm 1/4 scale model,
and model in context(museum)

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john mcmahon: tip top cont.

so this model didn't make it to the final presentation
due to some technical difficulties, i have to remember when some part of the process is new to me i have to leave extra time for troubleshooting
to continue the model journey
after sanding i made some extra parts out of urethane foam to act as a draft angle
and it follows one of my guidelines
if it doesn't have to look pretty make it look as ugly as possible
to the big vacuum former to pull 1/8" styrene 26" x 26"
i only wanted the top surface, all the extra is for the cause
trimmed the styrene and left a whole in the center to add strips of styrene
these strips were going to be a playful, over lapping and weaving to create a lighting piece
getting the strips to act the way i wanted is where i had trouble
using straight styrene strips had to much tension in them and would not hold the shape i was after
the glued bond kept on failing
so i went to heat forming but once the heat was introduced
the strips had to still relax and to keep them in position while they heated up was more difficult then i realized
the size of the styrene strips were 12"long by 1/8" by 1/8"
oh i love process pics











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john mcmahon: tip top

tip top is over head lighting piece made out of corian
due to the size this is a 1/4 scale model in styrene
once designed i modeled a base or pattern model which i use to create the prototype
modeled the base in solid works and then imported into rhino where i section the model
and prepped the file to be sent to the laser cutter lab techs
laser cut out of chipboard and glued and assembled
a little bit of sanding, some bondo, and priming
and a final dry sand at 320








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john mcmahon: Corrugation - Plica

right here are the steps that i took in creating my museum seating
Plica
first modeled in solidworks
then imported into rhino
to be handed over to kemal
for cnc milling
material selection is stacked plywood, to the keep cost down
but where i saved on material i spent more time on finishing
next time i would spend more money on some renshape
after the milling is the finish sanding, priming, and painting








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john mcmahon: Family Portrait

Throughout this class I plan to put into action my working thesis topic: Family Portrait. The Family Portrait series is inspired by the idea of creation and procreation, sexuality and asexuality. The way a family is created from two people, polar opposites, the male and the female. The idea/concept represents the father, and the material is the matter, representing the mother. The creations have a conception timeline, and their aesthetic and physical evolution depends on various defined circumstances. The use of the 3D scanner will introduce characteristics of one of the parents; visually reflecting some of the identity traits of a species.This will form one part of the equation. The other half is an unconfined set of variables, which will be combined and filtered through Grasshopper to produce a pivotal stage in the evolution of a design. At this stage, a decision will be made to either output immediately or continue digital modification through more traditional 3D computer modeling.
The potential areas to be explored and focused on are Lighting, Adornment, Shelters and Seating. The objects I am interested to scan in are a turkey leg (half eaten, chewed up), pasta structures, fibers, brushes, hair, curtains, draperies, meshes, carpets, pillows, cushions, ice, and various raw and cooked foods. This class will be an experimental laboratory, as well as a work place for the conceptual evolution and application process of the Family Portrait lineage of furniture and objects.
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