Inspired by Simons x carriage i have adapted it to suit the E3D extruder nozzle to allow the nozzel fan housing & fan to stay in place when the nozzel needs to be removed. Due to the heater block the fan house has a cut out to allow for removal.
I have included 2 types of the new fan house. 1 with a nut trap for an M4 nut that functions with an M4 extruder hold down bolt, which also stabilises the fan house during extruder removal and 1 without the nut trap.
Some of the photos show my set up with offset extruder ( romscraj) but the stl fan house files here are for centrally located extruder.
I have also included the x carriage as a 1 piece stl for those people confident in their layer adhesion and don't want the fuss of bolting on the individual LM8UU clamps. But be warned the clamp area side walls can be pretty weak. Don't squeeze them unless the bearings are in place and only tighten the bolts enough to just pinch the LM8UU bearings. Don't say i didn't tell you :-)
UPDATED > Ive added a cable restraint bracket . Keeps the cables away from the X axis belt
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