Ender 3 CR10S Multi Direct Drive Extruder with Tool Free Adjustment

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Ender 3 CR10S Multi Direct Drive Extruder with Tool Free Adjustment This thing focuses on creating a flexible Direct Drive extruder assembly that allows for easy swapping out of extruder head types and hot end maintenance, rather than trying to reinvent the wheel when it comes to producing the perfect fan duct. This design primarily features a single 4010 or 5015 fan duct, which I have only tested with a 5015 duct that works well. This thing is ideal for those who want to tinker or test various extruder types but don't want to rebuild the assembly every time. It's also much kinder on the fan and heater wiring, reducing continuous stress. Quick animation of the setup here: https://youtu.be/UpRedjqkhzA Therefore, I have designed a standard mounting bracket and duct base that accepts various Extruder head types, including BMG Clone, Stock Extruder, Creality dual gear extruder, and an optional head for replicating the standard Bowden Tube setup. Each head is secured with 4 M3 bolts. The short length of Bowden Tube between the extruder and hot end may vary slightly depending on the setup. I have also included a tool-free retention knob to the side fan, making height adjustment much easier and quicker. The front fan assembly features a pivoting fan fascia that allows for more control over directional air flow and provides an opportunity for quick print fan cowl customized add-ons. The front assembly can be pivoted to provide greater access for hot end maintenance. The pivot control is also tool-free, with an adjustment knob. I have found it useful to focus the front fan air flow on the heater block when cooling it down. A lot of Direct Drive Extruders have cables exiting the extruder to the left of the Extruder Head. It's logical to reroute the heater cartridge and thermistor cables in the same direction, providing neater cable management. This design is based on mirroring the hot end heat block so that the heater cartridge and thermistor cables exit to the left, leaving the right of the assembly visually clear and giving greater access for maintenance. To achieve this, I inverted the heater block. Counter-sinking the holes ensured that retention screw heads did not conflict with a wrench when changing the nozzle. I also included a washer on the thermistor retention screw to aid retention and trimmed the silicone shoe to adjust for reorientation. There is more detail in the uploaded Installation Guide. I generally do not use leveling sensors, but have included fixing details in each duct and a mounting bracket based on previous designs with community input. Please treat these as Work In Progress until confirmed acceptable. Installation As mentioned earlier, I have uploaded a detailed illustrated guide that also includes a base BOM. Printing All parts can be printed without supports if printed in the orientation uploaded. I have included a break-away stability foot to the Bowden Bracket Head part rather than including a raft. My prototypes were printed in BQ Red, White & Green PLA but would recommend printing in PETG if available. Printed on 2 x Ender 3 Pros and an Ender 5. Uploaded images were taken with the thing installed on a CR10S.