Liquid nitrogen might be overkill in this case; the goal is to cool the plastic down below its brittle transition temperature, which for most plastics is about -40° (420° R). Dry ice will do the ...

Previously, reaching the DDR5-12000 milestone required a more extreme cooling method, such as liquid nitrogen or dry ice.

Put the ethanol in a dewar and pre-cool it with dry ice. Put the liquid nitrogen in the other dewar. Put water and ice in a beaker. Put water in the other beaker. Heat the water on the hot plate, if ...