Ender 3 (Pro) Direct Drive Dual Gear Extruder Mount

Direct Drive and Dual Gear Extruder mount for Ender 3 (Pro).

I bought a [Dual Gear Extruder](https://www.amazon.com/Bigtreetech-Extruder-extruder-Ender3pro-Filament/dp/B08D9CNHVN?&_encoding=UTF8&tag=r2j3d-20) and a [Direct Drive Extruder conversion](https://www.amazon.com/Extruder-Conversion-Printer-Creality-Aluminum/dp/B08YN6B5TN/?&_encoding=UTF8&tag=r2j3d-20) kit for my Ender 3 Pro knowing they wouldn't work together out of the box.

So I designed a mount to make them work together. The only thing you need to mount everything with this mount is a couple of [M3 bolts and nuts](https://www.amazon.com/Stainless-Assortment-Precise-Beautiful-Printed/dp/B0714FLXND?&_encoding=UTF8&tag=r2j3d-20);

- 2x M3x20 to fix the mount to the Dual Gear Extruder
- 2x M3x8 to fix it all to the Direct Drive
- Extruder conversion
- 2x M3 nut to work with the two M3x8
- 1x M3x12 to fix the spring mount instead of the original M4
- M3 washers (optional)

Make sure you fix the spring holder and then the mount to the extruder first with the M3x20 bolts.

Unfortunately It isn't possible to change tension on the spring with this setup so make sure you test the Extruder tension before without tensioning the spring on the extruder arm. With the right spring you don't need to adjust the tension. If needed you can fill in the space needed with a few washers when mounting.

For strength I used 4 outer wall lines with my 0.4mm nozzle and fill-density of only 15%

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Ender 3 (Pro) Direct Drive Dual Gear Extruder Mount