"Robert Clark" wrote:

...

Separate print heads assumes an inkjet model. These deposition methods
do not have print heads. they lay down a layer of powder and then melt it
where it needs to form the image.


The Desktop Metal system is more akin to inkjet printing and does not use
powders:

Desktop Metal Production System.
https://www.youtube.com/watch?v=aUOCiRktuCo


Uh, Bob? The video says it uses powders.



Bound into solid rods with a binder similar to the solid rods used for
plastic 3D-printing:

https://en.wikipedia.org/wiki/Fused_deposition_modeling


Bob Clark
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