3d printed computers?

Okay this is pretty cool (If it's real ha!).

Apparently, now you can '3d print' computers. Apparently it's a great market.

http://huntercanada.ca/3d-printing-companies/

I'm not sure how far we can get with this technology but I would love to at least make my own parts.

Heck even companies like Celayix and Humanity are using it to improve customer satisfaction.
https://www.celayix.com/case-study/lower-costs-while-improving-client-sa...
https://www.humanity.com/

Like some diy electric guitar parts would be awesome.
https://revolutioninthecity.com/diy-guitar-kit/

Imagine printing out your own RAM? That would be sweet.

I do see some sites offering design files for computer parts. Like this flash drive holder.

https://pinshape.com/items/12045-3d-printed-sd-card-flash-drive-holder

Has anyone tried using this '3d printed' technology?

Love to hear from someone who actually has experience in this.