On Sat, 23 Feb 2019 21:53:20 +1300, Eric Stevens
wrote:

On Fri, 22 Feb 2019 23:11:35 -0800 (PST), RichA
wrote:

No, metal casting, extruding and machining, lathing is here to stay forever. The cheapest 3D printers produce objects that look like plastic, with leprosy.

https://techxplore.com/news/2019-02-...-metals-d.html

Of course it is here to stay for ever (however long that is) but so
too is metal 3D printing which will suplement metal casting, extruding
and machining. See:
https://www.solidsmack.com/3d-cad-te...ting-platform/
or http://tinyurl.com/y3spmdeo
and
https://www.3dsystems.com/sites/defa...?itok=DHYJGySs
or http://tinyurl.com/yyzzk34y
for examples.

I wouldn't be at all surprised if one day soon we get top end cameras
made with 3D printed titanium bodies.

See also https://en.wikipedia.org/wiki/Rutherford_(rocket_engine)
"It is fabricated largely by 3D printing, using a method called
electron-beam melting. Its combustion chamber, injectors, pumps,
and main propellant valves are all 3D-printed."

https://www.ge.com/reports/treat-avg...rcraft-engine/
"More than a third of the components in GE’s advanced turboprop
(ATP) engine, rated at 1,300 shaft horsepower, will be built through
additive manufacturing methods, a catchall term that includes 3D
printing."

https://www.designboom.com/readers/u...ne-12-20-2017/
--

Regards,

Eric Stevens