Creativity ELF Dragon Hotend Mount

thingiverse

A while ago I posted a NF-Crazy mount for my ELF. It worked really well but it turns out the NF-Crazy wasn't as good as I hoped in terms of flow rate. So... Since I has a spare Dragon HF, a spare Orbiter and a desire to learn FreeCAD's Assembly 4 workbench, I came up with this contraption. It's a new from scratch design based on a similar concept to of my NF-Crazy mount. Main goal was better cooling without loosing XY print space due to collisions with the steppers or top plate. There is a small 7mm loss in Z due to where the hotend sits, but I never print things that are that tall anyway. The fan ducts are a big improvement over the previous design since a) they are less restricted that the previous design and b) are internally re-enforced to prevent sagging when printing ABS with fans off. I print the fan duct in two parts (the fan attachment and the duct) and use Tamiya Cement to glue them. Everything expect a small portion of the fan attachment is meant to be printer without support. The Dragon hotend is fairly tightly enclose because I attach the fan as an extractor pull air from the narrow back and out the front. So far haven't run into issue with this fan arrangement. This is probably the last change I will do to my ELF before I deconstruct it and turn it into something that can no longer described as an ELF. Some would say I'm already there but its been a fun ride. Requires 10 M3x4x5 threaded inserts