*NEWS*PRINTING OBJECTS INSTEAD OF IMAGES

[Anonymous]

Printers produce copies in 3D
It
may sounds like science fiction, but the printer you buy in the future
could be able to produce a real-life object from images on your
computer.Several companies are working on developing low-cost
three-dimensional printers which could eventually find their way into
the home.The machines work by placing layers of a powdery material on
top of each other to create a real-life model of a digital image.”With
hundreds and sometimes thousands of layers, we can develop a prototype
that works, from coffee cups to car parts, in a variety of textures and
colours,” said Andy DeHart of the Z Corporation which makes 3D printers.

Layering technique
The
Boston-based company was showing off its technology at the recent
computer graphics Siggraph exhibition in the US.(Much like putting ink
on paper, it prints on powder and places a binder or glue during the
layering process,Andy DeHart)”We can import data from any digital
source,” Mr DeHart told the BBC programme Go Digital.”The data is
brought into our print driver and then manipulated and exported to the
3D printer.”The Z Corporation machines use a technology to bind the
powder first invented by the Massachusetts Institute of Technology.It
works by spreading a thin layer of powder which is shaped by a liquid
sprayed from an ink-jet print head adapted from a Hewlett-Packard
design.The machine then repeats this process, building up layer after
layer of powder until the object is complete.”The printer is a slicing
technology,” said Mr DeHart. “Much like putting ink on paper, it prints
on powder and places a binder or glue during the layering process.”

High Street printers
For
the powder, the company uses plaster, but it has also used a ceramic
material to create more lasting models.Leading companies such as Sony,
Adidas and BMW are using the 3D printing technology to create prototype
models as it is faster and less expensive than using traditional
methods.Mr DeHart from Z Corporation said the technology could make it
to the High Street, with printing shops offering 3D models as well as
conventional photocopies.”We don’t feel our technology is expensive,”
said Mr DeHart. “Our entry level system starts at $30,000 and that
system can support all powder types and all the geometric models.”

Machines that print objects instead of images
The
New York Times has a fascinating article on the future of 3-D printers.
According to the story, manufacturers are working to cut the cost and
size of machines that “print” objects instead of
images.”Three-dimensional printers, often called rapid prototypers,
assemble objects out of an array of specks of material, just as
traditional printers create images out of dots of ink or toner,” the
story says. “They build models in a stack of very thin layers, each
created by a liquid or powdered plastic that can be hardened in small
spots by precisely applied heat, light or chemicals.”Visionaries see a
future in which consumers download the plans for something they want,
push a button on their 3-D printer and wait a few hours for it to
create the item of their desires.Also, if you want to make yourself
dizzy, think about the possibilities of the Replicating
Rapid-prototyper: RepRap will make plastic, ceramic, or metal parts,
and is itself made from plastic parts, so it will be able to make
copies of itself……..How does that sound?

[Author]

May 8, 2007 at 12:12 PM