探春：3D or material additive manufacturing 没你们PE认为的那么神奇 ：）

短期内5-10年内不一定是好投资方向，和你之前的Hydrogen Fuel Cell system 一样：

政府做做R&D, 科研补贴还可以， PE 投大钱想要有多大回报，请三思~~

----- 不是你有作业要做，出来钓鱼吧 - 哈哈-------

1. Currently, 3D printing is good for for fast prototyping, saving tooling cost,

2. For serious structural parts, for high-speed rotational components -- no commericial use.

3. Metal 3D printing has a lot of issues to solve.

What you put out as "proof" was like -- early phase work, NASA readiness level 3, 5 at best.

Spending $1B, saved $70K :-- ) and still not fully proved.

For printing kitech tools, toys, 3D printer could be perfect :), BUT too expensive to be commercial viable??

For militatry use- weapons, 3D manufacturing/printing maybe ok, because the life time is a few minutes max, and cost is not an issue -- heard about $1000 coffee mug, correct? 3D printed Mug would be very cool, indeed, 3D printer would be good for coffee cups :)

For commericial use -- like a jet engine/gas turbine power system, life requirement for system could be 40K - 80 K hours, which is continuously running (24 x 7) for 5 years-10 years; life of components would be ~ 20K hours.

You really think the current 3D printer will generate that kind of parts -- precision/tolerance, heat treatment, etc..

3D printers & raw material supplies？

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