E3D V6 Watercooling without groovemount

A water cooled heatsink for E3D hotend.

After reading a lot of informations there:

https://well-engineered.net/index.php/en/86-community-water-cooling
https://www.thingiverse.com/thing:247599
http://forums.reprap.org/read.php?336,765316
http://www.instructables.com/id/Water-Cool-Your-3D-Printer-Nozzle-the-Cheap-and-Ea/
https://forum.e3d-online.com/threads/e3d-water-cooled-mod.53/


I remixed all these good ideas to create my own watercooling block.

The prototype was made without