3D printed dresses, even more than a thousand hours to make it?

I don't know if you have been paying attention to Met Gala recently. All fashions may have commented on a round of demon styling. I just want to talk about the 3D printed skirt worn by supermodel Jourdan Dunn (after all, other Technology has nothing to do with).

This is a petal-shaped skirt. According to MIT's review, the skirt was printed using a three-dimensional photo-curing (SLA) method that weighed 30 pounds (less than 14kg) and took more than 1,100 hours to make.)

First explain the stereoscopic curing (SLA):

The 3D printing that we usually see most often is right, extruding molten plastic like squeezing cream, then stacking them one by one, and the plastic will solidify when it cools. The SLA cure relies on a chemical reaction: under the action of light, the photosensitive resin that is originally in a fluid state crosslinks and becomes a solid at a local level. The printing of the SLA is carried out upside down, and the layer is cured and pulled up a bit to finish printing.

This dress is the work of designer Zac Posen. Customizing this 3D printed skirt requires first scanning the wearer to ensure that the clothes fit. This 3D printed skirt naturally has a lot of slots in the crowd. For example, it is hard, it is more like armor than clothes, and it is really heavy. But these are actually good, after all, it is more of a concept display, not to replace the clothes in life.

However, I only think that it is a slot when I use more than 1100 hours. It exemplifies the problem at the current stage of 3D printing: printing is going too slowly, especially when printing large items.

In fact, there are some techniques to speed up the 3D printing speed. For example, I have seen a fast version of the light curing technology. The related papers also appeared on the Science cover in 2015. Using this method, you can get a small model of the Eiffel Tower in 7 minutes, and it is smoother than ever.

The technicians added a "reaction inhibition zone" in the vicinity of the light-transmitting plate. By suppressing the reaction by adding oxygen, the "inhibition zone" curing reaction in the vicinity of the light-transmitting glass cannot occur, and curing occurs above the exiting zone. The advantage of this is that even if it is cured quickly, there is no need to worry about the cured portion sticking to the light-transmitting plate.