Open-source laser polymer welding system

This device allows you to make functional heat exchangers by welding together layers of plastic garbage bags!

This may be counter intuitive, but our latest theoretical and early experimental results show that this type of heat exchanger can be very efficient as well as absurdly cheap.

This component is part of an open source lab library, by the Michigan Tech's Open Sustainability Technology Research Group.

For similar see the Open-Source Lab How to Build Your Own Hardware and Reduce Research Costs