I've found a cheap kraken copy on ebay and decided to trim it for fitting in an aluminium kossel effector. Previously I've used chimera hotend, which started to overheat at working temperatures above 270 C (radiator itself was close to 100 C). Now the cooler block itself barely heats even at 330C and "heated chamber" working (3x150w halogen projectors). STL files for printing and then trimming aluminum parts are included.