But water-cooled hotends have been around for a while ... and it usually screws into a large heat sink that has a fan running over it. What heat makes it across the break should blow away with ...

[Dui ni shuo de dui] will show you how to easily convert an E3D-style hot end to water cooling with a quick reversible hack. That popular style of hot end has a heat sink with circular fins.

The use of epoxy is claimed to eliminate air gaps and improve thermal conductivity between the cooling system and the module and the proposed heat sink design is described by the researchers as ...