Non-planar hero ME part cooling fan w/ flex hose

Last crawled date: 4 years, 3 months ago

This fan duct allows you to get parts cooling with an ender 3 set up for non-planar printing as per Teaching Tech's youtube tutorial https://www.youtube.com/watch?v=gmePlcU0TRw
https://imgur.com/a/oPbYXSV first pic in proportion
I made this mount to be compatible with the hero ME. It uses the BL Touch screw lock mount since you can't use a bed level sensor with non planar printing anyways. This means you can easily swap between regular hero ME ducts and this air hose for non-planar if desired. This mount is also compatible with direct drive systems as you see in the pictures. My eventual goal is to be able to reliably print non-planar flexibles on an ender 3.
https://www.thingiverse.com/thing:9457 is the flexible hose used in this print, I found 2 segments and one nozzle to be able to get the air where I needed it sufficiently. The screw holes are just over 2.5mm.
https://www.thingiverse.com/thing:3589452 is the compatible direct drive mount I use
to print flexibles. This mount works with the Hero Me with zero interference as well as my mount. All I did was drill into the extruder arm plate on the gear side of the filament feed path and insert a piece of bowden with the tip snipped to a point so it rests quite close to the gear and idler. This prevents the filament from getting squirted out from between the gear and idler before reaching your hotend or bowden or whatever you use. I haven't had any issues with flexibles since doing this.