Marcin Jakubowski made this very interesting video tour of MTU open source lab with Dr. Joshua Pearce.
They make many interesting low cost solutions like heat exchanger made from garbage bags with open source laser polymeric welder and may great projects listed below videos ...
MTU open source lab have developed many incredible projects like:
MIG welder based DIY metal printer:
Open source laboratory and science equipment:
Open source Delta printer:
Here is the MTU lab homepage:
Marcin made another interesting tour og Aleph Objects Lulzbot factory: