Problems to overcome
I can believe that it is possible to print metal in new ways that allow for reduced cost or higher speed.
I also know that quite good yield stress (arond 1000 MPa) can be obtained in 3d printed steel. However, I have not heard of these printed materials also having good fatigue resistance (please correct me if I am wrong). Until fatigue is solved, I fear that 3d printed parts will remain difficult to use in high performance machines like the jet-engine mentioned in the article.
Also; part warping appears to be a problem with (some) free-standing thin walled structures
Still, I would love to be able to engineed high resolution 3d printed parts that are strong, fatigue resistant and liquid/gas-tight.
Biting the hand that feeds IT
