The print head assembly is a customized version of the Wim3rl.

"This head is an all-in-one solution, where the cooler and hotends are one stiff, durable and heat-resistant package. The head weights only 80 g (not including heaters and connectors to tubes and hoses) when filled with water, being as heavy as a common plastic part with the hotend and cooling components.”

https://www.kickstarter.com/projects/1057128232/wim3rl-water-cooled-print-head-with-3-nozzles-for

Despite an unsuccessful kickstarter campaign Mathias was extremely helpful and produced this customized version for me adapted to the magnetic push rod ball ends.

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