????斯圖爾特說(shuō)：“過(guò)去三年里3D打印機(jī)的表現(xiàn)已經(jīng)到了一個(gè)極限，它們已有大幅改進(jìn),?！钡撬鼈冞€是沒(méi)法打出芯片來(lái)，而且可能永遠(yuǎn)也做不到,。人們每年在芯片上要花大概5000美元,，但大多數(shù)時(shí)候都沒(méi)有意識(shí)到這一點(diǎn)，而無(wú)法打出電子產(chǎn)品就意味著所謂的“家庭工廠”的概念將永遠(yuǎn)局限在有限的領(lǐng)域,。

5. 就算3D打印市場(chǎng)翻了兩番,，它的規(guī)模也還是微不足道。

????斯圖爾特表示,，沒(méi)有理由不對(duì)3D打印領(lǐng)域所蘊(yùn)含的潛力抱有樂(lè)觀的預(yù)期,。他和Smartech的蓋思曼都對(duì)肯尼思?王的判斷深信不疑——這個(gè)目前市值約20億美元的市場(chǎng)到2018年價(jià)值將達(dá)約60億美元。相關(guān)公司一定會(huì)實(shí)現(xiàn)增長(zhǎng),，而客戶群也可能會(huì)快速擴(kuò)張,。但斯圖爾特也說(shuō)了，跟汽車零部件,、燈泡或民用飛機(jī)市場(chǎng)相比,，60億美元不過(guò)就是60億美元，不值一提,。而這個(gè)市場(chǎng)之所以能快速增長(zhǎng)的原因之一就在于它本身太小了,。

????斯圖爾特說(shuō)：“3D打印行業(yè)到2018年將翻兩番，這看起來(lái)真是個(gè)巨大的增長(zhǎng),。但是跟全球那些巨無(wú)霸般的制造業(yè)相比,，這只不過(guò)是九牛一毛而已?！保ㄘ?cái)富中文網(wǎng)）

????譯者：清遠(yuǎn)??

????"In every kind of way a 3-D printer could've gotten better in the last three years, they have improved," Stewart says. But they still can't make silicon chips, and they probably never will be able to. People spend roughly $5,000 per year on chips, largely without realizing it, and the inability to produce electronics means the concept of the "factory for the home" will remain limited in scope.

5. Even if the 3-D printing market triples, it's still a really small market

????There's no reason not to be optimistic about the growth potential in the 3-D printing space, Stewart says. Both he and Smartech's Gasman believe Wong's assessment is correct -- the market, currently valued at around $2 billion, will be worth roughly $6 billion by 2018. The companies in the space are poised to grow, and the customer base will likely continue its rapid expansion. But a $6 billion industry is still just a $6 billion industry when compared to something like automotive parts or light bulbs or airliners, Stewart says. One reason 3-D printing is able to grow so fast is because it's so small.

????"When you look at the 3-D industry tripling by 2018, that's enormous growth," he says. "But it remains a drop in the bucket compared to the global industry of making things."????