July 21st 17, 06:14 PM
posted to sci.space.policy,sci.physics,rec.arts.sf.science,sci.electronics.design
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Towards the *fully* 3D-printed electric cars.
In sci.physics Robert Clark wrote:
wrote in message ...
In sci.physics David Mitchell wrote:
...
Strati is little more than a $30,000 golf cart and the finish is an
abomination.
Not the point, remember the whole "mature technology" thing?
If we can do that *now*, imagine what we'll be able to do in 30 years
time.
Yes, it is the whole point.
They get speed by using thick layers as there is no other way to do it.
This
results in a crap finish.
And this IS an industrial grade printer.
A National Institute of Standards and Technology (NIST) noted this is a
problem with 3D-printing, that there is wide variation in results and
quality even in 3D-prints of objects by the same process:
NIST ADDRESSES METAL 3D PRINTER CHALLENGES WITH DIGITAL THREAD STRATEGY.
BEAU JACKSON 2017-07-17 8:17 PM
Quote:
In collaboration with Duck Bong Kim at Tennessee Technological University
(TTU), the National Institute of Standards and Technology (NIST) has
published a study addressing three of the challenges to production-ready
metal 3D printing.
The proposed model could eventually form a standard for 3D printed metal
parts and aid additive manufacturing through the certification process –
often seen as a primary barrier to progress.
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https://3dprintingindustry.com/news/...rategy-118409/
They propose solutions based on a uniformity of the digital information
provided both before and after processing.
On the other hand see this:
Navy Partnership Goes to New Depths with First 3D-Printed Submarine.
JULY 20, 2017
https://energy.gov/eere/articles/nav...nted-submarine
It's a 3D-printing of a carbon-fiber submarine hull. Judging by the video
the finish is quite smooth in this case, which would be required for a
submarine.
Exactly what a 3D printer is usefull for, a one off prototype.
--
Jim Pennino
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