On 7/30/2013 12:07 PM, email@example.com wrote:
Not "everyday", but my son is working with the software that builds
stuff on 3D printer....works for an orthopedic co. and the actual
printer is a bit fancier than consumer variety. This one lays down
"threads" of titanium, followed by a laser that melts the metal in
place. When the gizmo is "printed", I believe it is machined afterward
to make joint replacement parts.
On Tuesday, July 30, 2013 12:07:35 PM UTC-4, firstname.lastname@example.org wrote:
You can make your own 3D printer...here are just a few example links.
Current inexpensive consumer level 3D printers can only make somewhat
rough plastic items and only certain forms. More expensive printers have
the capability of printing a second material that can be dissolved or
melted away as a "scaffolding" to support overhanging parts and provide
the capability of printing any shape. Ultimately though you still get a
somewhat rough plastic part.
High end 3D printers are printing metals, ceramics and a host of other
materials that are able to produce much more useable parts at high cost,
but still a lot lower cost than other methods of producing the same
We are a long, long way from seeing any sort of household 3D printer
that can produce anything more useful than iPhone cases, bracelets and
the occasional plastic gear, all of which can be bought in high quality
injection molded versions for low cost.
3D printers are ahead of their time.
Where I see them coming of age is when 3D printing technology marries
nano technology so that 3D printers of the future might be used to print
out a 8 1/2 X 11 inch sheet of carbon atoms. (A "Bucky-sheet", if you
And, that will change everything. Monotomic layers of carbon atoms
(called "graphene") conduct electricity with very much less resistance
than metals, including silicon. Consequently, that makes it possible to
produce very much smaller circuits that work much faster on much less
electricity without producing nearly as much heat. Even now, the
fastest computers need to have cooling fans cooling them all of the time
because of the heat the current through their circuits produces. Being
able to print graphene lines just like we can optically print traces on
silicone wafers will provide the technology for the next generation of
electronics. Whatever comes after "integrated circuits" or "chips".
But, I expect it's the lowly 3D printer that will pioneer the technology
to print a Bucky-sheet.
Someone told me the reason there are no output jacks on TVs that
stream from the Net (except for outputs to speakers) is to avoid
Do you think that is true?
Why would the manufacturers care about someone else's copyrights?
And have TVs ever had output jacks, like VCRs and DVDRs with tuners
(I want output jacks to run the signals to the other rooms, instead of
having to buy 5 smart/streaming TVs. )
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