maps Ender 3 Direct Drive + Extruder Shroud

Main positive points from this design:

• no screws for fans : mount in place
• Fan for nozzle just on one side to avoid “grabbing” part's
• clear eye sight to the extruder nozzle
• Extruder disassemble without taking the shroud
• Shroud can be disasemble without taking extruder motor and viceversa
• Lightweight 
• BLToutch on front for easy disassemble and maintenance
• Mount for several Extruders: BGM; Dual Gear, Ender3 Stock and Fluxma “More Efective Extruder” (the same as stock)
• hook for secure the wires

BLToutch position relative to nozzle:  X: -28.5 ; Y: -50.0 ; Z: (find yourself!)

Extras:

• X Cap to secure the wires need for the the extruder
• combine with my Ender 3 Board lid to redirect wires  to have a better length for the wires in the DDrive

BOM:

• 4 M3x16 or M3x12 for assembling the DDrive and Srhoud
• 4 M3 nuts for assembling the DDrive and Srhoud
• 2 M3x12 for BLTouch 
• 2 M3 nuts for BLTouch 
• 2 M3x12 for the WireXcap
• 2 ZipTies to limit the wires in the Xcap (optional)

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Observations:

• parts aren't on printing place
• it will need supports
• don't use this on heat chamber for high temperature plastic (like ABS)
• i might do *.3mf file if someone message me and ask (probably for OrcaSlicer, or other from PrusaSlicer family)
• Any idea to make some changes write in the comments or message me.

History:

For several months i tried several shrouds on my Boden Ender 3 and had several problems with them… (the stock version it broke in the fixing screws and i started my research)

For several months i use the eB Fan shroud with great success until one day i found it traveling on my bed along with the extruder: somehow the fixing screws unleashed everthing, destroyed my print and shroud. One other handicap (in my view) was that it didn't had BLT incorporated; had to have one auxiliary bracket for it.

On my troubleshooting for getting better quality in prints, i decided to go DirectDrive. After several researches i fond the Multi Direct Drive Extruder . “Love at the first sight” but it turns out it was just “one night stand” it took a while to assemble it but after that it works fine; but something went wrong and again i found my nozzle cooling fan dancing on my bed. Also something that i didn't like on the MultiDD: the need to mount the hot end heat block inverted. I could have the rubber isolation on it anymore.

So i decided to make one more solid with less parts, easy to assemble like the eB, extruder totally free from the rest accessible to unscrew after taking the fan out of the way, and use the mount that i had already printed.

Glued the multiDD and after several hours of modeling, shroud prints, trials, mistakes, changes in the mount to make it easier to disassemble (BMG version); i finally have something that i like even it's not so pretty like a VORON, SANTANA or HERO ME, and the stock material. Even with that massive mess of wireing (it sould be better in the STL actual version) it still haven't cause any problems.

I had reference to the More Efficient Extruder because before i bought the BMG extruder i redesigned a bit to improve my flex materials prints; but my Ender-3 board burn and i bought the BMG before trying out this the reduce mailing costs. ( i'm a poor guy and that's why i make so many changes to a old second hand Ender 3). The “tweaks” that i made are also included, but probably the originals (photo from the author) might be better (never tested it). It's possible to mount in the STOCK option.

During the adaptation that i made for the DualGear and for the Stock extruder, i think that it could be simplified and make it uniform. Maybe in a later version… 

Follow me for more designs and updates.

If you like my work, support and  “buy me a criptocoffe" 

Also, share some makes in here!

Disclaimer:

You are a grown up, do it at your responsibility. If not, do it with parent supervision with their approval… hehehe

Good Luck and good prints