It seems to me that this article is full of handwaving, but here goes -
apparently, a doctor of Mechanical Engineering in the UK has come up
with a self replicating rapid prototype machine, you know, the ones
that can create anything by building up layers of plastic? His plans
are to eventually mark
This is a companion discussion topic for the original entry at https://community.robotshop.com/blog/show/self-replicating-rapid-prototype-machine