One has to admire their efforts, as the upfront costs of a fab lab are ridiculously high. As with any technology the Metrology becomes the predominant problem domain. i.e. Answering the question "Where do we get the repeatable precision?"

There are low-volume lab processes around that can hit below <234nm feature sizes, but a clean room must be considered part of the machine... And it can take years to figure out how to maintain atmospheres and gas mass-flow-control.

Pretty cheeky selling community designed hardware without citing the original hobbyists. Nothing they posted looks remotely new or novel. Meh =3