Finished building my K8400 a few weeks ago and not one single failed print so far.
Now I want to try with dual material, but I did not like the hotends “floating” next to each other. Designed a bracket to connect them with eachother.
The redesigned mount weighs 0,11g less than the original two combined. Did not want to add weight to Vellemans design.
Will machine it next week in 2017 aluminium… a bit overkill, but that is what I got!