I have recently been reviewing the way hotends are mounted given the noticable difference in print quality between the plate version and the groovemount version of my hotend i worked out that the groovemount especially in 3mm while it may feel very rigid it inherantly isn't no matter which type of screw you put in there,
I figured that my directdrive extruder had been around long enough that i update it with a few of the changes i had been thinking for for a while and here's what i came up with:
the whole thing is generally more compact , it sits lower to down on the carriage with , there is now a tight groove clamp system in place of the dual screw setup and the hotend also now sits higher up than before so the filament path is shorter than before to the control over the retraction should be better.
The reason it's called V9 is because i have already named other variants of the previous extruder eg v5 v6 v7 v8 so logically this one is V9 it's just i decided to put it up on thingiverse and here
if you want to try it out i have it uploaded on thingiverse , use the thinigverse link on the left